The caption reads:
NEW POSTAL ERA - Wenonah Postmaster James Elberson (left) stands by as Mayor Jack Sheppard holds the flag being raised by Joseph Carbrey, Wenonah postal clerk, to signal beginning of a new era in U S. postal service with takeover of the mails by a private corporation.

On May 18, 1971 a stamp for a letter when up from 6 cents to 8 cents and stayed at 8 cents until March 2, 1974 when the stamp was 10 cents.
January 27, 2019 stamps went to 55 cents.

The old seal below in use from 1792-1971.

Partial list of Wenonah Postmasters

Postmaster Finder

Postmasters by City
WENONAH POST OFFICE
GLOUCESTER COUNTY, NEW JERSEY

RESEARCH ON THIS POST OFFICE
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Name Title Date Appointed
Samuel M. Glading Acting Postmaster 04/01/1934
Samuel M. Glading Postmaster 04/24/1935
Mrs. May W. Veitch Acting Postmaster 02/05/1938
Mrs. May W. Veitch Postmaster 06/23/1938
George R. Baldwin Acting Postmaster 02/28/1953
George R. Baldwin Postmaster 03/01/1954
James L. Elberson Acting Postmaster 03/13/1959
James L. Elberson Postmaster 09/02/1960
Florence E. Yarosky Officer-In-Charge 01/16/1981
Charles E. Gill Postmaster 03/21/1981
Patricia Whelan Officer-In-Charge 10/07/1991
William Baker Officer-In-Charge 12/16/1991
Denise Griffith Officer-In-Charge 03/23/1992
Robert W. Jones Officer-In-Charge 05/11/1992
Marianne R. Derham Officer-In-Charge 08/26/1992
Marianne R. Derham Postmaster 01/09/1993
Michael Margiotti Officer-In-Charge 08/01/2008
Brian M. D'Autrechy Officer-In-Charge 02/02/2009
Anthony J. Tropiano Postmaster 08/29/2009
Jennifer L. Morgan Officer-In-Charge 05/19/2011
Eugenia F. Santos Officer-In-Charge
Carmelo Gonzalez Postmaster 10/06/2012
? Officer-In-Charge
Brian M. D'Autrechy Postmaster 09/15/2018
? Officer-In-Charge
Shanel Cody Postmaster 08/15/2020