I've got a few steam recordings floating around. One is a vinyl 45 or may a 33-1/3 on the smaller disc called "Recordings of 765" that I purchased at Steamtown when it was in Vermont still. I think I was 9.
The second is a cassette tape of the NY&LB with recordings from the 50's of mostly K4's but I recall a few CNJ Camelbacks may be on there, perhaps #774? I received it as a gift from my parents around age 14 with a copy of the "Unique New York & Long Branch" book.
Forgot about those until this thread. Thanks for the memories.