Grabbed these up the other day. The Otasco girls bike is for parts, the schwinn suburban is for paint practice, the 73? Western Flyer is for parts, and I haven't decided what to do with the 66 varsity yet.
I also managed to dig an absolutely amazing bike from the trash, a completely rusted Magna!

It had a nice $30 rack on it though that I already pulled off.
The nice chrome fenders on the Western Flyer are worth what I gave for all of these, so I came out ahead on this one.