Contents include: Data; correspondence, including Lee's suggestions regarding the cost accounting system; maps; notes; and reports - A study of the supply and demands at Haiwee Reservoir based on the available surface supply without regulators at Long Valley, by C.H. Lee? undated; and Extracts from 'Report of water resources of the Los Angeles River and Owens River Aqueduct, to the Aqueduct Investigations Bureau', by E.E. Shaffer and Chester B. Loomis undated