1941-1945 and mainly DC doesn't get you enough "key" books probably. Too late for all Superman and Batman keys. Too late for AS 3 and the JSA character appearances (GL, Sandman, Flash, Hackman, etc.).
Best case, it means Adams might have a really nice All-Flash 1, Star Spangled 1, MF 73, and GL 1 (but those all pre-date AS 8). Of course, since he didn't have a WW 1 (or it wasn't nice enough), we know its not comprehensive or all high grade from AS 8 forward. Possible "keys" after AS 8 would include Leading 1, Comic Calvacade 1, Boy Commandos 1, and MF 101. Not a lot.