A massive collection of barn-find cars in Kansas, including a 1979 Ferrari 308 GTS, will be up for sale later this year.

The collection — which has been hidden away for nearly 30 years — includes more than 140 classic cars from the 1920s through the 1980s, including well over 50 Fords.

The cars belonged to the late Bob Regehr, who invented the bouncy castle, and will be sold off on October 24 through VanDerBrink Auctions.

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After being hidden away for nearly three decades, a Kansas businessman's extensive collection of classic cars — spanning six decades of automotive history — is up for auction.

The 140-plus-car collection — which was brought to our attention by Carscoops and is being sold through VanDerBrink Auctions — belonged to inventor and businessman Bob Regehr, who died late last year. Regehr isn't a household name, but perhaps he should be, as he and his wife invented the bouncy house, officially patenting the design in the 1970s.

Regehr had collected cars since he was 14 years old and at one point had amassed 226 vehicles, his daughter told local outlet KWCH. The vast collection up for auction — which was kept secret for many years, but was featured in Hot Rod magazine in 2009 — includes models spanning from the late 1920s all the way to the late 1980s. Evidently, Regehr had a fondness for Fords; he owned nearly 60 of them, including two Mustangs and well over a dozen 1932 models.

The collection also features scores of Cadillacs and Chevrolets, including eight Corvettes from 1956 through 1978. Plus, there's one red Ferrari.

Take a closer look at the collection below: