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Charles Adler, Jr., Papers

Identifier: MC 61

Scope and Contents

This collection is made up of three folders containing the papers related to patents of Charles Adler Jr ranging from 1936 to 1952. There are letters, sketches, as well as patents for aircraft lights, proximity lights, and safety horns.


  • Creation: 1946-1952


Access Restrictions

Open to research without restrictions.

Use Restrictions

Some materials may be restricted. Permission to publish materials must be obtained in writing from the:

New York University Archives

Elmer Holmes Bobst Library

70 Washington Square South

New York, NY 10012

Phone: (212) 998-2641

Fax: (212) 995-4225


Biographical Note

Charles Adler Jr. was an inventor and engineer born in 1899 in Baltimore, Maryland. He attended John Hopkins University and briefly joined the army. Later he joined the Maryland and Pennsylvania Railroad developing safety devices. In 1928 he designed the first audible traffic horn. He was granted over 60 patents in his lifetime, 10 of which he donated to the government. He was a member of the Maryland State Aviation Commission and the Maryland Traffic Safety Commission.


50 photographic prints (in 2 folders) : black and white ; 5x7 inch

Language of Materials



This collection contains the correspondence and patents pertaining to a number of Charles Adler Jr.'s inventions, including aircraft lights, horns, and proximity lights.

Guide to the Charles Adler, Jr., Papers MC 61
Finding aid prepared by Claire Wolford.
Description rules
Describing Archives: A Content Standard
Language of description
Script of description
Code for undetermined script

Repository Details

Part of the CEPT Archives Repository

City on a Hill MA 03210 United States