English to Latin Words

English to Latin Glossary
http://wredmond.home.texas.net/alittera.html

English to Latin Dictionary, Smith.

http://books.google.com/books?id=MItiAAAAMAAJ

http://digilander.libero.it/Marziale/Grex/biblio/smith/

Meissner Latin Phrase Book

http://books.google.com/books?id=WFxFAAAAYAAJ

The best modern Latin dictionary is put out by the Vatican; see on line at:
http://www.vatican.va/roman_curia/institutions_connected/latinitas/documents/rc_latinitas_20040601_lexicon_it.html
However, it translates from Italian to Latin, so you would need to find the modern Italian equivalent first.