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, blueprints. Correspondence between railroad engineers regarding location, type, installation, and maintenance of clocks at LAUPT, includes data sheets from various companies. Also includes blueprints of various clocks.

Proposal, promotional materials. Proposal from IBM for installation of clock system for LAUPT. Includes promotional brochures for different clock systems.

Quote, promotional materials. Price quote for clock system at LAUPT from IBM International Time Recording Division. Includes promotional materials/data sheets for different types of clock systems.

Promotional materials. Promotional brochure from Stromberg Electric Company, Chicago, for Stromberg Time Recording System (lists companies that use Stromberg clocks).

Promotional materials, data sheets. Promotional materials/data sheets for IBM International Time Recording Co. products.

Promotional materials. Promotional materials from Warren Telechron for clock systems.

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.

Correspondence, blueprints.

Correspondence between railroad engineers regarding installation of communications systems (telephone, telegraph, and pneumatic tube) at LAUPT, including plan for Western Union office, cost estimates comparing Autocall and ADT fire alarm equipment, correspondence regarding installation of public address system, plan showing arrangement of telegraph office, blueprint of pneumatic tube system.

Correspondence, blueprints.

Correspondence between railroad engineers regarding installation of communications systems (telephone, telegraph, and pneumatic tube) at LAUPT, including proposed plans for supply rooms, electrical apparatus, equipment room. Also includes correspondence regarding installation of telephone booths.