That was kind of fun. I knew about the true crime author, Jack Olsen. We used to occasionally get each others email, and we were friends until he died last year.
I always get a kick out of seeing his book covers in libraries. And I keep this one on my shelf, in my own library, as a warning to the ladies:
But I didn't know about these Jack Olsens:
I've got to have a "Jack Olsens Only" party one of these days.