KP-1126-R2 - Klamath Project; View of crowd watching the demonstration for the chemical treatment of moss in irrigation ditches and drains; July 12, 1945; Photo by R. S. Hopkins
Original photograph: 18 x 13 cm, black & white photo, with "NA" written in front in pencil, caption under photo reads "KP-1126-R2 - Klamath Project - View of crowd watching the demonstration for the chemical treatment of moss in irrigation ditches and drains. R. S. Hopkins, Photo July 12, 1945", from Black Binders Digital reproduction of photograph: KP-1126-R2 - Klamath Project - View of crowd watching the demonstration for the chemical treatment of moss in irrigation ditches and drains, Black Binders, Bureau of Reclamation
