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Duplex Truck Company records

Identifier: 00108

Scope and Contents

This collection consists of the records of the Duplex Power Car Company and the Duplex Truck Company. Included in these records are articles of association, correspondence, patent certificates, reports of audits from 1917 to 1955, as well as profit and loss statements for the same years. Also found in the collection are stock certificates from 1916 to 1955, stockholders records and minute books of meetings, records of agreements regarding labor conditions and land purchase, circuit court records, and other documents relating to the company.


  • Creation: 1909 - 1955

Conditions Governing Access

Collection is open for research.

Conditions Governing Use

Permission to publish material from this collection must be obtained from University Archives & Historical Collections, Michigan State University.

Historical Note

The Duplex Power Car Company was founded in 1909 in Charlotte, Michigan, and produced mostly trucks and truck-related machinery until it was reorganized into the Duplex Truck Company in 1916. The Duplex Truck Company was a prominent builder and supplier of trucks to private companies as well as government agencies during the years between 1916 and 1955. In 1955 Warner and Swasey Company purchased the Duplex Truck Company and the Duplex division closed in 1975.


3 Cubic Feet (, 12 volumes on shelf.)

Language of Materials


Organization of the Records

These records are organized into 3 series

Missing Title

  1. The Duplex Power Car Company, 1909-1915
  2. The Duplex Truck Company, 1916-1955
  3. Photographs

Custodial History

Gift of Duplex Division, Warner and Swasey Co., 1975-10-17.

Legal Status

Copyright: Michigan State University Property Rights: Michigan State University



Duplex Truck Company Records
4 Published And Cataloged
Description rules
Describing Archives: A Content Standard
Language of description
Script of description
Language of description note
Finding aid written in English.

Repository Details

Part of the University Archives and Historical Collections Repository

Conrad Hall
943 Conrad Road, Room 101
East Lansing MI 48824 US