BE 1/1 = Old Babylonian Inscriptions Chiefly from Nippur Part 1: Plates 1-35 and I-XV, The Babylonian Expedition of the University of Pennsylvania Series A: Cuneiform Texts Vol. 1/Part 1, Philadelphia, 1893 (PDF available at ETANA)
BE 1/2 = Old Babylonian Inscriptions Chiefly from Nippur Part 2: Plates 36-70 and XVI-XXX, The Babylonian Expedition of the University of Pennsylvania Series A: Cuneiform Texts Vol. 1/Part 2, Philadelphia, 1896 (PDF available at ETANA)