Sepher Halachoth Rav Alfas [Rabbinic code]. Volumes II (part 2) and Vol. III (only). Bound here in three volumes.

ALFASI, ISAAC BEN JACOB (RI”F).

Bragadin

Venice

1552

With Nimukei Yoseph, Mordechai and Tosephta. EXTENSIVE SCHOLARLY MARGINALIA THROUGHOUT all volumes, in several early hands.

These notations include corrections of the all the texts including the commentaries of Rash’i and Ra’n. There are countless scholarly innovations throughout The glosses include those of R. Gershon ben Abraham Port Katz , who signs his name several times throughout the two volumes. R. Gershon ben Abraham Port Katz (b. 1538) was a member of the Rapa-Porto / Rapaport family. He studied under R. Meir Katzenellenbogen and lived in Mantua where he was celebrated as a noted Torah scholar (see Carmoli, Ha’orvin U’bnei Hayonah 1861, p. 4).