Box 62

Scope and Contents From the Series: This series consists of over 4,500 images documenting the Irrigation Investigations Unit. The employees captured and collected these images to visually document their varied and extensive scientific research. They organized the set by their own category outline, and that intellecutual arrangement was maintained here. Each category has a three-digit number, often followed by one or two letters representing subcategories, followed by further numerical identification for each unique image....