Was invalidating stamps considered under 1970 Postal Reorganization Act?

The Postal Reorganization Act of 1970 changed the name of the United States Post Office Department and more. But there were things it didn’t change — despite rumors to the contrary.

Research uncovers new details about use of invalid stamps

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Jan 1970 - On-Line Newspaper Archives of Ocean City - The Ocean

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Philatelic & Stamp-Collecting Hobby News Articles

How The Cost Of A Postage Stamp Affects Your Retirement, 50% OFF

Greetings! from Kimberly Shaw: My Two Cents

Conversations with Alice Paul: Woman Suffrage and the Equal Rights Amendment.

Postal workers union endorses Biden, warns 'survival' of USPS at stake : r/politics

Postage stamps and postal history of the United States - Wikipedia

File:Stamp-US-1970-Woman-Suffrage.png - Wikipedia

Postage stamps and postal history of the United States - Wikipedia

Philatelic & Stamp-Collecting Hobby News Articles