b377:
I do apologise but I have only just found your reply. It would be fair to say that I saw and heard a lot of Stratocruisers in my younger days at Prestwick. I can just remember those of AOA (American Overseas Airlines) before they became part of Pan American.
The Stratocruisers of Pan American and BOAC visited on a daily basis. I do remember vividly getting up on Christmas Day 1954 and seeing the plume of black smoke coming from the wreckage of G-ALSA (I have mentioned this on pprune before).
Of course, the USAF provided lots and lots of C-97s and KC-97s also. The earliest that I recorded was a YC-97 45-59589 (with the B-29 short fin and rudder) and the most advanced was the turboprop YC-97J 52-2693.