Collection of Letters - YIVO Emissary in Palestine, 1930s-40s

About 135 letters, copies and drafts of letters, printed and handwritten, which belonged to Zeev Wilizanski, emissary of YIVO research institute in Palestine. Jerusalem, Tel-Aviv, Warsaw, Vilnius, New-York and other locations, mid 1930s until early 1940s (several items are from a later or earlier period). Yiddish, English, some Hebrew and some Polish.
Among others, the collection includes: about 10 letters from Menachem Linder, secretary of YIVO historic committee in Warsaw and member of the Jewish underground movement in Warsaw Ghetto (murdered in the holocaust in 1942); two letters from Jacob Lestschinsky (demographer and statistician, one of YIVO founders); letter from Zalman Reisen (philologist and author, one of YIVO founders), letters from representatives of the Technion in Haifa, the Hebrew University in Jerusalem, the statistics department of the British Mandate government, Keren HaYesod, JNF, Jewish Council in Haifa and other institutions.
Most of the letters concern ordering and locating books, publications and material about Jewish demography and statistics.
Enclosed: two handwritten compositions about Jewish demography (probably by Wilizanski); a printed report (in Hebrew and English) with demographic tables about birth rates in Palestine (no binding, it is possible that this is the brochure "Statistical tables on the natality among various sections of the population of Palestine", printed by the Central bureau for Medical Statistics in Jerusalem, 1945); newspaper cuttings with articles about Jewish demography; and other paper items.
Most of the items are filed in a binder. Size and condition vary. Fair-good overall condition. Stains, creases, filing holes, folding marks and tears (mainly slight, at margins). Several items with open tears.