Goldschmidt-Fraenkel_Machzor
Goldschmidt-Fraenkel Machzor, formally known as Machzor According to the Customs of the Ashkenazim in All Their Branches: Including the Western Ashkenazic Rite, Polish Rite and former French Rite is a critical edition of the piyyutim (liturgical poems) found in the Ashkenazic and French prayer books. Daniel Goldschmidt initiated this project, and after his passing his son-in-law Yonah Fraenkel continued it. This project includes collecting manuscript versions of the piyyutim used in the aforementioned customs, including those piyyutim recited today, as well as those piyyutim recited in the past which did not make it to the age of printing. The machzor includes a commentary to all the piyyutim.