26 Apr
2021
26 Apr
'21
6:37 p.m.
USFWS Circular 16: Migration of Birds (1950), by Frederick C. Lincoln 65173 [Link: https://www.gutenberg.org/6/5/1/7/65173 ] [Files: 65173-0.txt; 65173-h.htm] Thanks to Tom Cosmas from materials made available on The Internet Archive. Regards, Al