The two sections of the index, then, went different ways: when Marcus opened‘branches’ of his archive in Los Angeles, New York, and Jerusalem, he microfilmedportions of his archival collections and also the Americana part of Deutsch’s cards. Bycontrast, the remaining cards were left to languish at Hebrew Union College’s Cincinnatilibrary.

As a graduate student, hemaintained a card index of his own. When Marcus’s friends wrote of his travels abroad,they declared that ‘When we think of that card index by now we shudder. What propor-tions it must have assumed’. 18