American Multicultural Publications
Offers books on customs, traditions, history and accomplishments of ethnic groups.
http://www.diversity-books.com/

Hippie Dictionary
A reference book, history book, and social statement about the counterculture of the 1960s.
http://hippiedictionary.com/

Mnemonic Cartoons for English Vocabulary Building
A book of cartoons that teach Greek and Latin prefixes and roots used in English words.
http://www.geocities.com/spenoff/mnemoniccartoons.html

Morrison's Sound-It-Out Speller
Dictionary that uses phonetics to locate correct spellings, and offers hints about meaning.
http://www.phonicspeller.com/

Newton's Bilingual Dictionary of Land Surveying, Geography, and Geomatics
Annotated French / English lexicon. Includes excerpts, press, an order form, and contact information.
http://jnewton.free.fr/index_en.htm

Oxford English Dictionary
Oxford University Press's dictionary described with ordering information.
http://www.oed.com/

Quality Books
Sells a variety of special interest titles, mainly focused on do-it-yourself kits for everything ranging from getting a divorce to starting a business.
http://www.qualitybooks.com/