my neighbor gave me 3 cuttings of an angelwing begonia that he has had since about 1948.
are there any resources out there that will list what kind of angelwings there were back then???
There are some old excellent books floating around but most have been out of print for years or decades. Occasionally you might find one on eBay for $$$. There are several web sites with lots of pictures but there is no site that has everything.
Try this site to begin with:
ABSASTRO site for cultivars