Scope and Content Correspondence re construction of Aliso St. Viaduct, much to Henry Russell Amory, WPA administrator from Lloyd Alrich, LA City engineerBlueprint "Aliso St. Viaduct & 1st & Glendale grade sep. welds for reinforcing bars, city of Los Angeles, Lloyd Aldrich, City Engineer" Blueprint "East approach & river span, Aliso Street Viaduct, City of Los Angeles, revised details of bases for light & trolley pole standards"Blueprint "East approach of...