None of the following is a defence (his attitude on NAMBLA is deeply squicky to me); but, as far as I know, Delany (not Delaney) was never a member of NAMBLA. The closest that some quick Googling finds is the famous quote:

> I read the NAMBLA [Bulletin] fairly regularly and I think it is one of the most intelligent discussions of sexuality I've ever found.

Will Shetterly has a conversation with Delany on the subject at http://shetterly.blogspot.com/2014/07/a-conversation-with-sa... .