U.S. Mint recovers 1974-D aluminum cent - Numismatic News

U.S. Mint Production in April 2019 Tops 1.25 Billion Coins

1974 Penny Coin Value (Errors List, D, S & No Mint Mark Worth)

Government gets aluminum cent to keep the integrity of the hobby

US Mint gain Possession of 1974-D aluminum Cent

Privately held 1974 aluminum cent may be next on U.S. Mint's bucket list: Monday Morning Brief

ANS Digital Library: Medallic Art of the American Numismatic Society, 1865–2014

If you're not familiar with the 1974-D aluminum cent, there's a brochure for you

1933 double eagle - Wikipedia

Coin Collecting

Issue 30 - Mint Error News Magazine

Politics in The Mint - Grand Rapids Coin Dealer Discusses 1933 St. Gaudens vs 1974 Aluminum Cent - Grand Rapids Coins

1971-S Proof Eisenhower Dollar Overstruck on a Bronze San Francisco Assay Office Medal (17.1g) NGC PF 69 RED CAMEO

Issue 27 - Mint Error News Magazine

Mike Byers Mint Error News - Unique 1974-S Aluminum Lincoln Cent Obverse Struck on Philippine 1 Sentimo Planchet