NILI - Netzakh Israel Lo Yishaker ('The Eternity of Israel will not lie')

Letters written by Avshalom Feinberg to Naaman Belkind about personal matters (typewritten copies, French, and translations to Hebrew)
Letters in Yiddish (photocopies);
Letter of greetings to 'Gideonim' group
Letters to various individuals about personal and business matters, and about exterminating locusts (photocopies, typewritten copies, manuscripts; French and Hebrew)