Yes but I don't remember what they called the size out, remember it was a Kenda! My mind wants to say 1 3/4 but I'm lying to say it!~hopefully someone knows for sure.
I think the decimal sizes are for the standard 26" rims, the 1 3/8 rim is a larger diameter. I've never found any wider tires for those rims, only narrower, like 1 1/4.