Selected Works

Rabbeinu Yitzchak bar Rav Yosef al HaTorah

A close associate of the Rashba, Rabbeinu Yitzchak cites unique peirushim heard directly from the Rashba, alongside commentaries from Rabbeinu Chananel, Rav Shmuel ben Chafni Gaon, and more — published from manuscript for the first time. 

Haggadah Shel Pesach Otzar HaRishonim

 
Includes the commentaries of 4 different Rishonim (based on manuscripts and elucidated with footnotes):
-Rabbeinu Shem Tov Ibn Shem Tov (Rosh Yeshiva in Spain in the 1400s)
-Rabbeinu Avraham Chadida (also a great Spanish Rabbi, presumably a student of Rabbeinu Shem Tov)
-A student of Rabbeinu Yitzchak HaKohen 

And the Haggada from Chachmei Ashkenaz

Kinos Matmonei HaKalir

Two rare commentaries on the Tisha B'Av Kinos—from early Chachmei Ashkenaz and Chachmei Tzarfas—published from previously unpublished manuscripts. 

Includes the first-ever publication of Rabbi Yosef ibn Shem Tov (Rebbe of the Abarbanel) on Megillas Eicha.

Rabbeinu Yitzchak bar Rav Yosef al HaTorah - Shemos

Includes Chumash, Rashi, Ramban and a new Likkutei HaRashba on Shemos.