Mayor John P. O’Brien records

Collection REC0033 - RG 001. Office of the Mayor of the City of New York

Collection REC0033 - RG 001/RG 001.JPO. Office of the Mayor, John P. O'Brien


John P. O'Brien was the 98th Mayor of New York from January 1-December 31, 1933. This collection consists of materials generated by the daily business of his brief administration.


27.5 cubic feet (55 boxes)



Conditions Governing Access

Collection is open for research. Patrons are required to use microfilm for those series for which it is available. Advance notice is required for using original material. Please contact us to arrange access.

Physical Location

Materials are stored onsite at 31 Chambers St.

Alternate Forms Available

This collection has been partially microfilmed. Microfilm is available on-site or via interlibrary loan.

Processing Information

Physical processing of the collection was completed circa 1990-1999.
This collection consists of materials generated by the daily business of the administration of Mayor John P. O’Brien. The bulk of the records consist of correspondence between the Office of the Mayor and various city agencies and departments. Also included are reports, petitions, bills, speeches, and proclamations issued by O’Brien in his role as Mayor.
John P. O’Brien, the son of Irish immigrants, was born in Massachusetts on February 1, 1873. He earned a law degree from Georgetown University and later served as New York City Corporation Counsel and a judge for the Surrogate’s Court. O’Brien’s mayoral tenure was brief; in a special election held after Mayor James J. Walker’s resignation in 1932, Tammany Hall nominated him to run against Joseph V. McKee, who was serving as Acting Mayor in the interim. O’Brien only served for one year, losing the 1934 mayoral election to Fiorello H. La Guardia, but was notable with improving the financial state of the City.
Guide to the records of Mayor John P. O’Brien, 1933
Alexandra Hilton
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Revision Statements

  • 2017: Updated by Alexandra Hilton.
  • 2018: Updated by Alexandra Hilton.