Classicist's Online Library

The links go to e-books at the Internet Archive.
You might gave to sign-up for a FREE account, to read them. 

Grammars

• Greek Grammar for Colleges / Smyth 
• Allen and Greenough's New Latin grammar

Language Overviews 

• The Greek Language / Palmer
• The Latin Language / Palmer

Dictionaries       
         --  the texts of the most read classical authors will be in PERSEUS, click a word in the text to get its definition
              as well as tense or tense.  The links below go to the dictionaries at Perseus.

• Perseus Greek Lexicon / Liddell  & Scott & Jones 1940
         use the HEAD search box for transliterations
• Perseus  Latin Dictionary / Lewis & Short

Links to the e-version of the paper dictionaries are below. 

Poetry Meter

• Meters of Greek and Latin Poetry / Halporn