Add to ORKGBlack and white photograph of Ray and Marvin Yourdon in 1923. Ed Yourdon's notes: "Ray and Marvin, at the Osborne Ranch in Colorado. (Ray was approx 15 months old).
Black and white photograph of Ike and Marvin Yourdon in a boat on a lake in Colorado. Ed Yourdon's ...
Black and white photograph of Marvin Yourdon, probably Mabel, and an unidentified woman, possibly in...
Black and white photograph of Marvin Yourdon. Ed Yourdon's notes: "That's Marvin Yourdon on the lef...
Black and white photograph of Ray and Marvin Yourdon in 1923. Ed Yourdon's notes: "Ray and Marvin, ...
Black and white photograph of Ray and Marvin Yourdon circa mid-1920s?. Ed Yourdon's notes: "I don't...
Black and white photograph of Ray and Marvin Yourdon in the mid-1930s. Ed Yourdon's notes: "This ma...
Black and white photograph of Ray and Marvin Yourdon and an unknown dog around 1927. Ed Yourdon's n...
Black and white photograph of Marvin and Ray Yourdon with their instruments. Ed Yourdon's notes: "...
Black and white photograph of the Yourdon clan - Utah, summer 1947: Marvin, Ike, Ed, Marion and Ray....
Black and white photograph of Ray Yourdon in his first year. Ed Yourdon's notes: "Ray Yourdon says ...
Black and white photograph of Ray and Marvin Yourdon in band costumes. Ed Yourdon's notes: "Ray and...
Black and white photograph of Marvin Yourdon and young Ed Yourdon with a piece of farm machinery. E...
Black and white photograph of the Yourdon brothers playing baseball with a younger boy at Dragon gil...
Black and white photograph of Ed Yourdon, adopted son of Ray, with a tractor at the Yourdon farm, Je...
Black and white photograph of Marvin and Ike Yourdon. Ed Yourdon's notes: "Marvin Yourdon on the le...
Black and white photograph of Ike and Marvin Yourdon in a boat on a lake in Colorado. Ed Yourdon's ...
Black and white photograph of Marvin Yourdon, probably Mabel, and an unidentified woman, possibly in...
Black and white photograph of Marvin Yourdon. Ed Yourdon's notes: "That's Marvin Yourdon on the lef...
Black and white photograph of Ray and Marvin Yourdon in 1923. Ed Yourdon's notes: "Ray and Marvin, ...
Black and white photograph of Ray and Marvin Yourdon circa mid-1920s?. Ed Yourdon's notes: "I don't...
Black and white photograph of Ray and Marvin Yourdon in the mid-1930s. Ed Yourdon's notes: "This ma...
Black and white photograph of Ray and Marvin Yourdon and an unknown dog around 1927. Ed Yourdon's n...
Black and white photograph of Marvin and Ray Yourdon with their instruments. Ed Yourdon's notes: "...
Black and white photograph of the Yourdon clan - Utah, summer 1947: Marvin, Ike, Ed, Marion and Ray....
Black and white photograph of Ray Yourdon in his first year. Ed Yourdon's notes: "Ray Yourdon says ...
Black and white photograph of Ray and Marvin Yourdon in band costumes. Ed Yourdon's notes: "Ray and...
Black and white photograph of Marvin Yourdon and young Ed Yourdon with a piece of farm machinery. E...
Black and white photograph of the Yourdon brothers playing baseball with a younger boy at Dragon gil...
Black and white photograph of Ed Yourdon, adopted son of Ray, with a tractor at the Yourdon farm, Je...
Black and white photograph of Marvin and Ike Yourdon. Ed Yourdon's notes: "Marvin Yourdon on the le...
Black and white photograph of Ike and Marvin Yourdon in a boat on a lake in Colorado. Ed Yourdon's ...
Black and white photograph of Marvin Yourdon, probably Mabel, and an unidentified woman, possibly in...
Black and white photograph of Marvin Yourdon. Ed Yourdon's notes: "That's Marvin Yourdon on the lef...