[oh8eleven]

33 rpm records 45 RPM records

I also remember 78 RPM records:

"For almost fifty years, 78s were the go-to record speed. Back then, people didn’t call them 78 records; they just called them records.
It wasn’t until Columbia Records released a 12-inch 33rpm vinyl LP (or Long Play) in 1948 that there was another option.
These new records could hold a mind-boggling twenty minutes per side."

78s

[HartleyMBaldwin]

There were still a few 78s around when I was a kid in the 60s.

Once, around 2005, I was showing a young driller’s helper on a reverse-circulation rig how to set up the rotary sampler, and told him to keep it turning somewhere between the speed of a 33 record and that of a 45. Total blank look.

[gitmo]

I still have 78 rpm records and a hand crank Victrola.