1. I. Amit, 1981 . The role of H. M. Kalvarisky in the colonization of lower Galilee, 1898 -1905 . M.A. Thesis , Department of Geography, The Hebrew University of Jerusalem (in Hebrew).
2. D. Angst, 1977 . Nichtzionisten in Palastina, die rolle der Jewish Colonization Association. M.A. Thesis , Department of History, Zurich University.
3. R. Aronson, 1979 . The establishment and the initial development of Zikhron-Ya'akov and Rishon Le-Zion as two of the first Jewish colonies in Palestine, 1882 -1883 . M.A. Thesis , Department of Geography, The Hebrew University of Jerusalem (in Hebrew).
4. H. Auhagen, 1907 . Beitraege zur kenntniss der landesnatur und der landwirtschaft Syriens. Berlin: Deutsche Landwirtschafts-Gesellschaft.