Copy of Birds of Cortes and Mitlenatch Islands, by G.P. Sirk, Ch.W. Gronau, and F.C. Zwickel, 1990s? Excerpt from Ian McTaggart-Cowan, featuring Fred Zwickel, undated
Copy of Birds of Cortes and Mitlenatch Islands, by G.P. Sirk, Ch.W. Gronau, and F.C. Zwickel, 1990s? Excerpt from Ian McTaggart-Cowan, featuring Fred Zwickel, undated