I was prompted to post this by reading the interesting Ransome Tree Feller and Crosscut Saws post about the steam powered saw. This isn't my video, but it is my Dad using a saw that we have. There is another version with an engine integral to the frame of the saw, I've used that version a lot. I thought this was a bit of an oddball that not everyone might have seen. The earliest versions were manufactured in the small town of Ava, MO, and are marked "Ava Saw Co". Dad grew up there and new the folks making them, this was just post WWII. We lost Dad in 2018. Here's a YouTube link.
I'm not sure how to post links on here it's my first try, this may not work.
JohnD
Sparta, MO
USA