Elaine Finding information about extinct creatures is very difficult , Pre 1970 is very difficult , Unless it has to with Paleontology ,
Last major problem was Nebraska or Kansas 1956 0r 58 .. 35 people were bitten , around either side of a dozen died ,
Last time I found the History of that (Brown Cobra )
I use to go through the National library , It use to be much more accessable , I found some 1920's and even earlier books with hand drawings that were really interesting ,
After 2000 when systems updated I have not had access to the long list of millions of publications in the Archives , Extincion info , naturalists all kinds of info dissapeared ,,
My 1970 Boy Scout manual mentiond a few ,,
always loved the creature info ,