For Textkit enthusiasts who like to look at old grammars/texts, the site below provides access to :
Instruction in Latin (1875)
Harpers Latin Dictionary (1891)
Writing in Latin(1876)
Grieschische Schulgrammatik (1897)
Greek Lexicon (1826)
Where do I get the program to open .djvu files? I remember hearing something about this file type awhile ago…
click the button on the bottom where it says download plug-in. 
(under the greek lexicon link)
Also, to save it to your hard drive, click the upper left floppy disk icon. I save my files as bundled. I wonder… there might be a way to change this format as pdfs.
The LizardTech had djvu to pdf converting tool. but they think pdf format one of their greatest rival. So their conversion tool makes too large a pdf than is necessary.
And see http://amazingforums.com/forum/PLANETDJVU/115.html
I tested with Allen and Greenough’s Instruction in Latin. It’s 2.52MB in djvu. when I printed this into PDF(with a PDF print driver) it is inflated up to 6.71MB. This book is 142 pages, And this size is similar to Benette’s “A Latin Grammar”, in PDF, 289 pages, 6.88MB.