>I went to amazon and did a subject search on Ada and it returned
>285 hits, ranging from new to old Ada books, with an occasional
>misfit.  I only traversed through the first 100, and I only noticed two
>to be non-Ada programming language.  So, there appears to be a
>fair amount of literature.

Quite a lot of the hits I've found on Amazon and other online bookstores are
books and papers on the Americans with Disabilities Act (I think that's the name
of it!) - ADA. I can't remember whether there is a case-sensitive search, but
that would rely on people spelling Ada properly!