Not an actual book reference, but it might be good to know...
A lot of out of print books are still available through Amazon. A lot of used book sellers and people who still have copies of OOP's are affiliated with them. If you can't find it in the book stores, don't forget to check there.... Ebay, too, while you're at it. It's hard to find anything that ISN'T on Ebay....
Fancy Goldfish by Dr. Erik L. Johnston and Rick Hess. It is probably the best all around goldfish book for beginners to advanced. It is a complete guide to care and collecting, it also has some great pictures of goldfish. It is $24.99 on cover but I paid $17.47 on amazon.
Cichlids of the Americas by Wayne Leibel
I chose not to put this in the advanced section only because it's such a great read that anyone casually thinking about keeping cichlids (or fish for that matter) would probably be convinced enough to give the hobby a try. I think Leibel is the Aquarium hobby's most entertaining writer.
Aquarium Style by Matthew Christian, not sure of the publisher. it has some reall nice tank setups, as well as some thet are on the edge. it has a great section on what you can put into an aquarium and what can not. very helpful for beginners.
I thought Wickman's book was coming out as part of the KISS series with a publishing date of last summer. I was in Borders recently and they had a whole section of the KISS books but I did not see it there.
For my money the best book out there now is Baensch's Aquarium Atlas Vol 1.
i like the book "the simple guide to freshwater aquariums" by david e. boruchowitz. it is written for beginners in an effort to bypass "new take syndrome." heavily emphasizes cycling, water changing, amount to feed, not overstocking, etc. just in-depth enough for a beginner, but not over the top.
I like the one titled "Aquariums for Dummies" - mostly b/c I'm a big "... For Dummies" fan, but this one is also a good general beginnig-level book & includes lists of common mistakes & how to avoid them and opinions on bad beginner fish (as well as good ones).
Being a beginner myself, I really appreciated the straightforward writing style & list of common mistakes.
I think it's published either by IDG books or Hungry Minds (I can't remember which & don't have the book handy right now).
Edit: Here's the citation...
Hargrove, Maddy & Mic (1999) Aquariums for Dummies, IDG Books Worldwide, Chicago, IL
And here's another one I really like for species info:
Schliewen, Ulrich, Aquarium Fish, English Translation by Rita & Robert Kimber (1992), Barron's Educational Series, Hauppauge, NY
It's the only one I've found so far to include Corydoras Panda.