Original photograph: 17 x 12 cm, black & white photo, with "NA" written in front in pencil, "Aug 10 - Potatoes on Irrigation and Soil Temperature Experiments Oregon Experiment Sta [?] Will Blackman [?] farm Nematode [?] control - 60° F - 115 days 63° F 90 √ 70° F √ #881 8 prints" written in back in pencil, stamp D28 in back of photo, from Black Binders Digital reproduction of photograph: 881 Klamath, Black Binders, Bureau of Reclamation
