Flatgate takes the gold!
I posted this one for you, flatgate, as Don Gowan was the owner of the Gun Re-Blu Company, and I know you are always looking for informational tidbits on them.
The other two gents are D. B. McInduff (left) and Floyd Sutphin (right).
The picture is taped inside an original 1955 printing of Elmer Keith's SIXGUNS along with other photos, including this one taped just below the one posted above:
Look close and you will see that is an engraved tri-color Lightweight! Most likely done by Gun Re-Blu.
This copy of SIXGUNS came from the estate of a collector in West Asheville, North Carolina.
Other photos taped inside include a fancy tooled leather gun/knife rig with an engraved ivory gripped SAA and ivory handled bowie knife, and an engraved S&W M29 (or pre-29) lying on top of a letter from the Gun Re-Blu Company stating it to be a "44 Smith & Wesson Magnum ~ Elmer Keith's Personal gun ~ Barrel alterations, refinishing, engraving, and platinum inlay by THE GUN RE-BLU COMPANY and their craftsmen ~ Biltmore, North Carolina".
Taped in the back of the book is a signed print of Joe Bodrie, "The Fastest Gun Alive ~ Star of the Pontiac Dealers Road Show", dated 6-20-58 and stamped "Courtesy of Harry's Cadillac-Pontiac Co., Asheville, N.C."
Another pic of Gowan is taped to the inside cover.
I have a little more info for you flatgate, and will email it to you shortly.