מחזור לראש השנה ויום כיפור Majzor para Rosh haShanah y Yom Kipur (1967) is a bilingual Hebrew-Spanish prayerbook for the Yamim Noraïm compiled and translated by Rabbi Marcos Edery z”l, and published by the World Council of [Conservative/Masorti] Synagogues under the supervision of Rabbi Marshall T. Meyer (1930-1993). Rabbi Reubén Nisembom (1938-2023), then a student at the Seminario Rabínico Latinoamericano, proofread the maḥzor. Besides the liturgy (in the Ashkenazi nusaḥ), the prayerbook is prefaced by Seliḥot and includes essays concerning prayer by 20th century scholars in Spanish translation, such as Rabbi Abraham Joshua Heschel and Martin Buber.