I picked up a Vista "Workhorse" at an estate sale two years ago for $3. It's a single-speed coaster-brake bike...I've been slowly working at making it a beach cruiser.
Looked like this when I bought it.
Looks like this right now...
I searched around and found that Vista was a sub-brand of Columbia in the 70's, and actually found another "Workhorse" for sale on eBay: