4. To Alexander from John W. Mellor, 11 Mellor Park, Lockleys, Adelaide, 8 May, 1919, asking if he is personally be willing to assist in the Oology, clutches, of W.A. birds' eggs exchanges. 1 p.
5. From Alexander to J. W. Mellor, 11 Mellor Park, Lockleys, Adelaide, 28 May, 1919, regret have few duplicates to exchange, enclose lists of clutches available. 2 p.
6. From Alexander to H. K. Coale, Highland Park, Illinois, U.S.A., 18 June, 1919, after 3 years absence answering letter to arrange exchanges of skins of Australian birds and some skins from other countries. 2 p.
7. To Alexander from John W. Mellor, 11 Mellor Park, Lockleys, Adelaide, 10 July, 1919, list of birds' eggs sent . 2 p.
8. From Alexander to J. W. Mellor, 11 Mellor Park, Lockleys, Adelaide, 17 July, 1919, received clutches of eggs, only 7 species were on wanted list, sending exchanges, 14 species not needed for W. A., other egg clutches already held. 3 p.
9. From J. F. Illingworth, Division of Entomology, Bureau of Sugar Experiment Stations, Queensland, 25 July, 1919, letter offering insects occurring in North Queensland agricultural areas collected as pests of sugar cane. 1 p.
10. To H. A. Longman, Queensland Museum, Brisbane, 22 July, 1919, 22 July, 1919, offering specimens of Myrmecobius and Tarsipes, asking for Hypsiprymnodon and any species of Phalanger, also any New Guinea material. 2 p.
11. To Alexander from John W. Mellor, Mellor Park, Lockleys, Adelaide, 26 July, 1919, included desiderata on "locality" list, send any common W. A. species. 1 p.
 12. From Alexander to J. F. Illingworth, Division of Entomology, Bureau of Sugar Expt. Stations, Meringa, Cairns, 13 August, 1919, thanks for offer of common insects of Queensland to compare with W. A., gladly pay postage. 1 p.
13. From Alexander to J. W. Mellor, 11 Mellor Park, Lockleys, Adelaide, 9 September, 1919, keeping 16 clutches, sending back 7, list of birds' eggs sent. 2 p.
14. To Alexander from J. A. Illingworth, Division of Entomology, Bureau of Sugar Expt. Stations, Meringa, Qld., 15 September, 1919, sending box of insects, listed, if wanted, mark list, interested in cockroaches and muscoid flies. 1 p.
15. To Alexander from A. Jefferies Turner, Wickham Terrace, Brisbane, 15 September, 1919, on return was unable to visit W.A., then heard you were back at Museum, remembering Lepidoptera, tell me of a likely Lepidoptera W.A. collector. 1 p.
16. List of insects sent, Sept. 15, 1919, to Dept. of Agriculture, Victoria, N.S.W., Museum Sydney, South Australia, West Australia, Melbourne. 1 p. 
17. From C.S.G. Shaw, Public School, Goolagong, New South Wales, 29 September, 1919, school museum wants specimens of weapons and implements of the natives of W.A., offering a collection of U.S.A. gem stones, sent by post. 1 p
18. To Alexander from H. B. Coale, Birds of the World, Highland Park, Illinois, 3 October, 1919, sending a box of birds from Japan, would be glad to get any extras, esp. from list in The Emu. 1 p.
19. List of Birds sent to H.K.Coale Highland Park, Illinois, Second Collection, 1919. 3 p.
20. From Oswald Lower, Bartley Crescent, Wayville, S. A., 9 October, 1919, asking about a new species of Angelia,, held in W.A. Museum, same as his Lithopepla from Dundas, W.A., also seeking a WA Lepidopterist for exchanges. 1 p.
21. To C. H. Shaw, Public School, Goolagong, N.S.W., 7 October, 1919, Mr. Glauert still on leave, delaying exchanges of gemstones for native weapons, will send reply. 1 p.
22. To Alexander from C. L. E. Orton, Petworth Park, Moora, W.A., 12 October, 1919, regret missing trip, will send specimens in few days. 1 p.
23. To O. Lower, Bartley Crescent, Wayville, S. A. , 10 October, 1919, regret few collectors of specimens of Lepidoptera in W. A. except Mr. Newman, not many in Museum collection. 1 p.
24. To J. F. Illingworth, Division of Entomology, Bureau of Sugar Experiment Stations, Meringa, Cairns, Qld, 13 October, 1919, received box of insects, sending back in box a series of W. A. Cockroaches and list of W.A. Orthoptera. 2 p.
25. To Alexander from J. F. Illingworth, Division of Entomology, Meringa, Cairns, Qld., 31 October, 1919, received very interesting specimens of roaches (although broken in transit) trusting you can supply W.A. specimens in spirit. 1 p.
26. To Director, Queensland Museum, Brisbane, 3 November, 1919, received letter and 3 skins very pleased to have, in return sending 7 W.A. specimens, hoping you send us 4 other species in exchange, list of Queensland marsupials desired, also sending specimens for you to examine but we need them back as we have hardly any specimens of Notomys. 4 p.
27. To Alexander from C. L. E. Orton, Petworth Park, Moora, 15 November, 1919, 3 weeks of flu, but will send clutches of Little Falcon and Little Eagle, offer of Melanosterna. 1 p.
28. To C. L. E. Orton , Petworth Park, Moora, 13 November, 1919, have eggs of Melanosterna anaetheta to send you. 1 p.
29. To Alexander from Ronald Trickett, Riverdale, Coolup, W.A., 3 November, 1919, sending eggs from Britain. 1 p.
30. From Alexander to Ronald Trickett, Riverdale, Coolup, W.A., 21 November, 1919, thanks for British eggs, sending eggs from R.A.O.U. checklist of W.A. birds. 1 p.
31. From Alexander to H.K. Coale, Highland Park, Illinois, 21 November, 1919, sent birds in exchange, separate cover reprints of all papers on Australian birds by R.A.O.U. v. conservative, so sending names given by Mathews as well. 1 p.
32. From Alexander to O. Lower, Bartley Crescent, Wayville, S.A.,24 November, 1919, regret unwilling to send moth Angelis melancroca by post as insects get broken, would send by personal charge in box. 1 p.
33. To Alexander from Helen A. Longman, Queensland Museum, Brisbane, 9 December, 1919, received specimens. 1 p.
34. From Alexander to C. E. L. Orton, Moora, 12 December, 1919, sending eggs of M. anaetheta, from Bird Island, Safety Bay, Garden Island, single birds eggs, also clutch of Entomophila leucomelas, pleased to get sets sent. 2 p.
35. To Alexander from C. E. L. Orton, Petworth Park, Moora, 22 December, 1919, thanking for eggs received. 2 p.
36. From Frederic Wood Jones, University of Adelaide, 6 January, 1920, asking for details of marsupials of Western Australia especially Myrmecobius fasciatus, or to borrow one pickled. 3 p.
37. From Alexander to F. Wood Jones, Adelaide University, 13 January, 1920, v. willing to help but Myrmecobius are rarely seen or caught alive in good condition, also Tarsipes, also fairly common marsupials Dromicia concina and Sminthopsis murina specimens, suggest advertising. 3 p.
38. To Glauert from C. E. Shepherd, 26 Stanhope Gardens, London,S.W.7, 16 January, 1920, asking if otoliths sent had been received after 4 months as a registered parcel. W.B.A.:Glauert not yet back. 2 p. 
39. To Alexander from John W. Mellors, Mellor Park, Locksley, S.A., 24 January, 1920, regret delays in letters due to death in family, missed nesting season on Kangaroo Id., hoping to visit W.A. with R.A.O.U. research. 2 p.
40. To Alexander from F. Wood Jones, The University, Adelaide, 29 January, 1920, would like access to a Dromicia concinna and Sminthopsis murina, alive or dead, Tarsipes in any condition. 2 p.
41. From Alexander to H. K. Coale, Highland Park, Illinois, 13 February, 1920, box of 53 skins of birds sent had broken open but as no list included can't tell if any lost, includes a list of names from Sharpe's list indebted for 3 birds. 2 p.
42. To Alexander [on leave] from William I. Souther, Groton, Mass., U.S.A., 16 February, 1920, letter offering to sell and buy collections of shells listed. 4 p.
43. To C. L. Shepherd, 26 Stanhope Gardens. London, 2 March, 1920, your letter, box of otoliths received by Glauert. 1 p.
44. From Alexander to F. Wood Jones, Adelaide University, 4 March, 1920, list of young or embryonic specimens  (q v)sent, only 3 species adults are Sminthopsis murina, Tarsipes spenserae and Dromicia concinna in exchange we would like copies of your zoological books ; I recently saw a distant Myrmecobius' burrow, at P. Wickham, Kyrup, Laurier. 3 p. 
45. To Alexander from F. Wood Jones, Adelaide University, 9 March, 1920, thanking for cooperation and help. 2 p.
46. To F. Wood Jones, Adelaide University, 15 March, 1920, Alexander,on leave, left parcel to be sent to you. 1 p.
47. From F. Wood Jones to James C. Batty, 30 March, 1920, unpacked case of anatomical material arrived safely. 1 p.
48. From Ronald Trickett, Grassmere, Coolup, 19 June, 1920, sent sets of W. A. birds' eggs. 1 p.
49. To Alexander from Henry K. Coale, Highland Park, Illinois, 27 July, 1920, sending details in time for your return. 1 p.
50. From C. L. Shepherd, 26 Stanhope Gardens, London, 31 July, 1920, hoping to receive fish heads and specimens of Arripus trutta, Arripis georgiamus, Kyphosus sydneyanus, market specimens. 3 p.
51. To Alexander from Henry K. Coale, Highland Park, Illinois, 19 August, 1920, sending box of birds, some quite rare, if they are not good enough don't count them. 1 p.
52. To Ronald Trickett, Grassmere, Coolup, 11 September, 1920, received eggs. 1 p.
53. rom Glauert to F. Wood-Jones, University, Adelaide, 13 September, 1920, thank you for reprints of papers, work on Myrmecobius. 2 p.
54. To J. Battye from Henry K. Coale, Highland Park, Illinois, offering skins of Japanese birds, asking for stamps. 1 p.
55. To Glauert from F. Wood Jones, Adelaide University, 22 September, 1920, contented with Myrmecobius, specimens opened by incision in belly, preserved in spirit, also any small marsupials, external characteristics of pouch embryos. 3 p.
56. To Alexander from Heber A. Longman, Queensland Museum, 22 September, 1920, sending specimens of Phalangers: Petaurus sciureus, Petauroides volans, Hypsiprymnodon moschatus in exchange skins of Myrmecobius and Tarsipes. 1 p.
57. From A. J. Williamson, Bank of Victoria, Dunolly, 23 March, 1920, asking for specimens of rocks. 1 p. 
To Alexander from A. J. Williamson, Bank of Victoria, Dunolly, 29 September, 1920, reminding about specimen. 1 p.
58. From Glauert to C. Foster Cooper, University Museum of Zoology, Cambridge, 7 October, 1920, as specimens of crustacea offered by Stanley Gardiner's expeditions to islands of Indian Ocean and a Dormouse for mounting would be welcome packed in a tin-lined box via Agent General for Western Australia, Savoy House, Strand, London. 1 p.
59. From Glauert to Dr. W. Eagle Clark, Royal Scottish Museum, Edinburgh, 7 October, 1920, an exchange of Australian mammals would be exchanged for birds from the Scottish National Antarctic Expeditions which sometimes come here in the winter months. 1 p.
60. From Glauert to A. J. Williamson, Bank of Victoria, Dunolly, 7 October, 1920, regret that the minerals you asked for are not available for exchange, state the nature of your collection we will try to send suitable specimens in return. 1 p.
61. From Glauert to F. Wood Jones, Adelaide University, 7 October, 1920, procuring Myrmecobius and other small marsupials, but much of pouch material is old, after you finish Trichosurus I will try. 1 p.
62. From Glauert to C. E., Shepherd, 26 Stanhope Gardens. London, 11 October, 1920, Mr. Alexander on leave, the otoliths are gratefullyv acknowledged, 2 Monocentris from Albany sent with any desiderata, Govt. trawler wrecked. 1 p.
63. From Glauert to W. N. Souther, Groton, Mass., U,S.A., 12 October, 1920, as Alexander was on leave and then resigned, the Trustees say that unable to enter into exchanges of conchological specimens yet but will, notify. 1 p.
64. To Glauert from A. J. Williamson, Bank of Victoria, Dunolly,14 October, 1920, seeking a spearhead chipped out of telegraph insulator or Roscoelite. 2 p.
65. To Glauert from L. E. Orton, Petworth Park, Moora,1 November, 1920, show sent skin of Bush Wallaby to Mr. Le Souef and a bird Charadru, also bird collections. 1 p.
66. To L. E. Orton, Petworth Park, Moora, 1 November, 1920, Need skull to identify kangaroo skin, bird sent a Sharp- tailed Stint, Pisobia acuminata. 1 p.
67. From Glauert to Ronald Trickett, Riverdale, Coolup, 1 November, 1920, sending series of eggs in exchange for those sent 62. Eudyptula minor, Forster, 130. Zonjfer, pectoralis, 223. Phalacrocorax melanoleucus, 238 Sula fusca Brisson, 352 Merops ornatus, Lath. 361. Cuculus pallidus, 575. Grallina picata, R.A.O.U. 1 p.
68. To Glauert from John W. Mellor, Mellor Park, Lockleys, Adelaide S. H., 2 November, 1920, after a month in W.A. working the Malurus family of Wrens leuconotus and leucopterus, Stirling Ranges, Dirk Hartog and Barrow Islands. 2 p.
69. From Glauert to A. J. Williamson, Bank of Victoria, Dunolly, 11 November, 1920, sending spear head made out of a telegraph insulator fro Hall's Creek, an abandoned goldfield. 1 p.
70. To Glauert from L. E. Orton, Petworth Park, Moora, 16 November, 1920, sending clutches of eggs, sending skin with skull gift, wants an egg of Lesser Noddy also Wedgebill (Spenostoma). 1 p. 68.
71. To Glauert from A. J. Williamson, Bank of Victoria, Dunolly, Vic.9 December, 1920, received spearhead, would like one made like porcelain, can send quartz crystal with molybdenite. 1 p.
72. from Glauert to A.J. Williamson, Bank of Victoria, Dunolly, 17 December, 1920, we have not got the spearhead you want, if any comes in we will save it for you. 1  p.
73. From Glauert to L. E. Orton, Petworth Park, Moora, 10 December, 1920, at R.A.O.U. you said the Little Eagle was seen in your locality, also heard of a Red-necked Avocet was seen inyour locality, try and get some for the museum. 1 p.
74. To J. W. Mellor, Mellor Park, Locksley, Adelaide, 17 December, 1920, there are no skins of Malurus available for exchange, the large series of skins not as plentiful as believed, but borrow them for research. 1 p.
75. From Darwin L. Platt, Osteologist and Anatomist, 17 East Main St., Rochester, N. Y., 18 December, 1920, wants skulls of Aboriginals, also animal skulls. 1 p.
76.To Glauert from L. E. Orton, Petworth Park, Moora, 26 December, 1920, a mob of avocets were seen on his swamp but have now disappeared. 1 p.