I photographed these Beech B-60 Duke examples at Oshkosh and Missoula, Mont.

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1969 Beech 60 #P-90

Oshkosh 2025

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1975 Beech B-60 Duke #P-338

Oshkosh 2025

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1975 Beech B-60 Duke #P-363

Missoula, Mont. 2021