Three books featuring the teachings of R. Yitzchak Kahana of Kolno, Jerusalem kabbalist and close disciple of R. Yitzchak Eizik Chaver, a transmitter of the kabbalistic teachings of the Vilna Gaon:

• Sefer Yetzirah, with commentary of Vilna Gaon and Toldot Yitzchak commentary by R. Yitzchak Kahana of Kolno. Jerusalem: Michel HaKohen and Yitzchak Gościnny, 1874[-1875]. First edition of Toldot Yitzchak. Large folding plate with diagram of the "231 gates".

[5], 82, [6] leaves, [1] large folding leaf. 20 cm. Good-fair condition. Stains, wear and tears. Worming to first leaves, affecting text. Tears to folding plate. New binding.

• Toldot Yitzchak, Part II – supercommentary to the Vilna Gaon's commentary on Sefer Yetzirah. Jerusalem: Yitzchak Gościnny and Avraham Gagin, [1879]. Second edition, with expanded and revised supercommentary on the Vilna Gaon's commentary to Sefer Yetzirah.

[2], 64, 63-72, 71-96, 100-101 leaves. 20.5 cm. Dry paper. Overall good condition. Stains. Small marginal open tears to title page and several other leaves, repaired with paper filling. Pencil inscriptions. New binding.

• Toldot Yitzchak – Part II, continuation of commentary on Sefer Yetzirah by R. Yitzchak Kahana of Kolno, with index Petach Tikvah, and with Mareh Kohen, explanation of Aspaklaria HaMeirah Ilan Sefirot by R. Yaakov Temerles. Jerusalem: Shmuel HaLevi Zuckerman and partner Nachman Betito and Chizkiyah Shabtai, 1884-1885. Numbered as "Part II" like the previous volume, as explained in author's introduction.

[2], 8 leaves; 102-194 leaves; 13 leaves; 8 leaves, [1] folding leaf (Aspaklaria HaMeirah Ilan Sefirot), [1] leaf (corrigenda). 20.5 cm. Dry paper. Overall good condition. Stains. Small marginal tears to title page and several other leaves, repaired with paper filling. Marginal open tear to Ilan Sefirot, affecting text. Pencil inscriptions. New binding.

R. Yitzchak Kahana of Kolno (Lithuania; present-day Poland) was a close disciple of R. Yitzchak Eizik Chaver, and authored several books on the kabbalistic teachings of the Vilna Gaon. He immigrated to Eretz Israel and settled in Jerusalem, where he published (in 1874-1885) the three parts of his work Toldot Yitzchak, on the Vilna Gaon's commentary to Sefer Yetzirah and his other kabbalistic teachings.

Sh. Halevy, no. 334; Vinograd, Otzar Sifrei HaGra, no. 685.