A faunistic database on the spiders of the Caucasus
I scanned and uploaded an old article by Eugene Simon:
Simon, E. (1899): Araneae caucasicae. Museum Caucasicum 1, 477-478. [full-text PDF]
"... a thorough collecting of Arachnids in Transcaucasia would yield a magnificent prey because, namely in spiders, an astonishing richness in both individuals and species made itself noticeable." L. Koch (1878)