As far as I can tell, 0214668142 refers to First Blood by David Morrell. 0214668150 is the correct Wodehouse title published by Barrie & Jenkins 1972. I would say, yes, you have the First edition.Wodehouse always sells well. The price will be restricted by the library markings.

I'm not familiar with Tales from Japan, but a quick reccy tells me that it's worth £15-£65 depending on condition. From the faults as you describe them, you're probably not going to improve matters much. When you sell it, list the faults in full, and accentuate the positive.