Igeret de-Rabenu Sherira gaon.
Contributors: Hyman, Aaron, 1863-1937.
Publisher: Hotsa'at "kiryah ne'emanah"
Published: 1967
Place of publication: Yerushalayim
Language: heb
Number of pages: 109
Subjects: Mishnah -- History; Talmud -- History; Tannaim
Notes: Added t.p.: Igereth Rav Sherira Gaon (the letter of R. Sherira, gaon)

Collated from various texts and edited with a critical commentary "Pathshegen Hakethab" by Aaron Hyman.