Two species of trees from the post-glacial of Illinois Penhallow, D. P. (David Pearce), 1854-1910 creator Royal Society of Canada. contributor text book S.l s.n 1891? 1891
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ENG Caption title. At head of title: Section IV, 1891. Trans. Roy. Soc. Canada. "(Read May 27, 1891)." Illinois Paleobotany Quarternary Trees, Fossil FC 02 0203 no. 52987 AEU 561/.21 CIHM/ICMH microfiche series, no. 52987 https://www.biodiversitylibrary.org/bibliography/59738 0665529872 17602400 10.5962/bhl.title.59738 CaOOCIHM