Black and white photograph of two men next to a pile of wood, probably in a gilsonite mining camp in the 1940s. Ed Yourdon's notes: "Firewood. That might be Marvin Yourdon in the foreground, and it could be Ike Yourdon in the background ... but that's just a guess.
Black and white photograph of Ike Yourdon sitting near houses in Bonanza, Utah. Ed Yourdon's notes:...
Black and white photograph of people with horse-drawn wagons next to a camp with tents, possibly in ...
Black and white photograph of trucks loaded with Gilsonite. Ed Yourdon's notes: "I've mentioned, in...
Black and white photograph of a truck loaded with firewood. Ed Yourdon's notes: "I really don't kno...
Black and white photograph of the Yourdons working on construction of a house, probably at one of th...
Black and white photograph of Ike Yourdon and another man in the bed of a truck, probably loading gi...
Black and white photograph of Marvin Yourdon, probably in one of the gilsonite camps in southern Uin...
Black and white photograph of the Yourdons (Marvin and Ike) working on construction of a house, prob...
Black and white photograph of Ike Yourdon and three fellow workers with a truck, probably near one o...
Black and white photograph of Ike Yourdon and another man with a truck, probably in vicinity of the ...
Black and white photograph of Ike Yourdon and three fellow employees at American Asphalt. Ed Yourdo...
Black and white photograph of two boys and a wagon (possibly the Yourdon brothers) in one of the gil...
Black and white photograph of an oil drilling rig. Ed Yourdon's notes: "I have no idea where this p...
Black and white photograph (reverse image) of people with horse-drawn wagons next to a camp with ten...
Black and white photograph of two boys or young men on the ground near a shed, possibly in one of th...
Black and white photograph of Ike Yourdon sitting near houses in Bonanza, Utah. Ed Yourdon's notes:...
Black and white photograph of people with horse-drawn wagons next to a camp with tents, possibly in ...
Black and white photograph of trucks loaded with Gilsonite. Ed Yourdon's notes: "I've mentioned, in...
Black and white photograph of a truck loaded with firewood. Ed Yourdon's notes: "I really don't kno...
Black and white photograph of the Yourdons working on construction of a house, probably at one of th...
Black and white photograph of Ike Yourdon and another man in the bed of a truck, probably loading gi...
Black and white photograph of Marvin Yourdon, probably in one of the gilsonite camps in southern Uin...
Black and white photograph of the Yourdons (Marvin and Ike) working on construction of a house, prob...
Black and white photograph of Ike Yourdon and three fellow workers with a truck, probably near one o...
Black and white photograph of Ike Yourdon and another man with a truck, probably in vicinity of the ...
Black and white photograph of Ike Yourdon and three fellow employees at American Asphalt. Ed Yourdo...
Black and white photograph of two boys and a wagon (possibly the Yourdon brothers) in one of the gil...
Black and white photograph of an oil drilling rig. Ed Yourdon's notes: "I have no idea where this p...
Black and white photograph (reverse image) of people with horse-drawn wagons next to a camp with ten...
Black and white photograph of two boys or young men on the ground near a shed, possibly in one of th...
Black and white photograph of Ike Yourdon sitting near houses in Bonanza, Utah. Ed Yourdon's notes:...
Black and white photograph of people with horse-drawn wagons next to a camp with tents, possibly in ...
Black and white photograph of trucks loaded with Gilsonite. Ed Yourdon's notes: "I've mentioned, in...