The collection of a U.S. Navy veteran and former Post Office employee is heading to auction.

Bernie Larson had a strong affinity for Pontiac Trans Am and before his death, had accrued a collection of almost 20 classic Pontiacs. They are now being readied for sale by VanDerBrink Auctions.

The auction house says that after retired from the postal service, Larson frequented swap meets and was always looking for cars and car parts to buy. After he died last year, his family decided it would be the right time to sell the collection.

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Included in the collection are a 1971 Pontiac Firebird with a 400 cubic-inch V8, a 1973 Firebird with a 350 cubic-inch V8, and another 1973 Firebird with a larger 455 cubic-inch engine. Also found within the collection are two Pontiac Trans Ams from 1974, one Trans Am from 1975, a Trans Am from 1977, four Trans Ams from 1978, four Trans Ams from 1979, and one Trans Am from 1981 with a turbocharged 301 cubic-inch V8 and an automatic transmission.

Most of the cars featured in the auction need a significant amount of work to be returned to their former glory. Online bids are currently open for the cars while a collection of parts will be available to buy in person on June 12. Among the parts are classic Pontiac engines, intakes, carburetors, and various body panels, including bumpers.