What a great collection of nostalgia. I was an active spotter in the late 60's and the 1970's; I really miss the pistons, props and pure jets

As fox4g stated, some of the paint schemes were simply marvellous and the sound of the distinctive engines on some airframes were truly memorable e.g. the ground trembling trundle of a C-133, the drone of a C-97, the almost whisper of the C-54, C-118 and C-121's the thwack of the C-119, Caribou and Noratlas and of course the distinctive vapour trail of a C-141. I agree that the youngsters have missed an incredible era. Very many thanks for sharing the pics and making an older man remember the good old days!