I intend to provide the most sought after ebooks and verbal software for GRE preparation. Here I am posting few verbal ebooks and verbal softwares.Apart from Barron and Kaplan workbooks find in the link a few splendid PDF files containing collection of Antonyms and Analogies. Please let me know if you find any problem with downloading.
http://www.filefactory.com/f/0a494c5bb747ce9f/( this folder contains more than 10 gre ebooks related to analogy, antonyms, and reading comprehension section)