My guess is that his family consigned his cards to Leland's and they sent them all in. If you contact Leland's, they can probably help you. If you search "Charles Bray" on Lelands.com, it pulls up lots of results. REA sold some Bray cards in their March auction, but I assume they were originally from Lelands. There are Hobby historians on here who can tell you all about his hobby career.
www.lelands.com/bids?k=charles%20bray