Search database under title: Studies on the origin and early evolution of paired fins and limbs - for v.42, no.2 (1941) [kept with Reprints: RP21760] ; under title: Solar variations, climatic change, and related geophysical problems - for v.95, pt.1 (1961) [kept 551.69 SOL].
See Internet Archive for v.40 (1940). See link to website and PDF.
See also Internet Archive for other volumes.
