Some good ideas, suffers from too much Gotta Get Married. The best stories are the very few with no women in them. I understand he was a product of his time, but the love story aspect in most of the tales seemed forced, like perhaps he didn't actually want to include them but was required to. Still, an interesting look at SF from back when.
One exception was Murder Madness. In this story, Gotta Get Married fights a running battle with Gotta Crash the Plane. Seriously. It should have been titled Plane Crasher McCrash Crashes Planes.