Correspondence, Blueprints. Correspondence from architectural committee regarding mechanical concerns. Also includes blueprints of linemen's supply rooms, passenger facilities, restaurant employee's toilets, PBX toilet and conductor's toilet, emergency room toilet, key to plumbing specifications.

Correspondence between railroad engineers regarding installation of communications systems (telephone, telegraph, and pneumatic tube) at LAUPT, including cost estimate for installation of cable for telephone and telegraph facilities at LAUPT. Also includes map of set-back plaza stub plan with colored pencil showing route of proposed telegraph and telephone cable.