Scope and Content Correspondence between R.L. Adamson and W.H. Hulsizer re cost estimates for construction of Aliso St. Viaduct (1934-1935)Blueprint showing Aliso St. crossing of LA River (undated)Blueprint "Union Pacific System LA&SLRR Map showing right of way at Macy and Aliso Streets, Los Angeles Cal" (1927)Correspondence from W.H. Hulsizer to R.L. Adamson re cost estimates for purchasing land for rerouted tracks at Aliso St. (1935)Correspondence re...