Archaeology in the USSR (excerpts) by A. L. Mongait.
The Rock Carvings of the Ghegham Mountain Range of Armenia, by H. A. Martirossian and H. R. Israelian.
The Pre-history of the Armenian People, The Historical Situation in Western Asia at the Beginning of the Bronze Age (excerpts) by Igor M. Diakonoff.
Diakonoff, Map 1. Schematic Map of Western Asia in the 3rd through the Beginning of the 2nd Millennia B.C. (Ethnic situation).
The Chronology of the Caucasus during the Early Metal Age: Observations from Central Trans-Caucasus by Giorgi L. Kavtaradze.
Early Trans-Caucasian Culture (excerpts) from The Peoples of the Hills by Charles Burney and David Marshall Lang.
Armenia, Subartu and Sumer (First three chapters, pp. 1-81) by Martiros Kavoukjian.
V. Gordon Childe's The Most Ancient East, The Oriental Prelude to European Prehistory. Download in pdf format here (11 MB).
V. Gordon Childe's The Dawn of European Civilization. Download in pdf format here (26 MB).
Kura-Araxes Culture
Prehistoric Armenia
Armens
Hayasa-Azzi
Colchis
Eastern Asia Minor and the Caucasus in Ancient Mythologies by Robert Bedrosian
Soma among the Armenians by Robert Bedrosian
Armenian Mythology by Mardiros Ananikian
Iranian Mythology by Albert J. Carnoy
Indian Mythology by A. Berriedale Keith
Metropolitan Museum of Art (N.Y.) Heilbrunn Timeline of Art History Eastern Asia Minor and the Caucasus 8000-2000 B.C.
The Transition from Ape to Man, by Frederick Engels.
Ancient Society, by Lewis H. Morgan.
Edward Burnett Tylor's Primitive Culture. Download in pdf format here: volume 1 (12.5 MB); and volume 2 (9.1 MB).
A. L. Kroeber's Three Essays on the Antiquity and Races of Man. Download in pdf format here: Three Essays on the Antiquity and Races of Man (2.5 MB).