Goldschmidt, The Passover Haggadah: Its Sources and History (in Hebrew) (Jerusalem: Bialik Institute, 1960). Glatzer’s edition of the Haggadah (cited above) is based in part on Goldschmidt’s research, but the first edition of Glatzer’s Haggadah was published in 1953, years before Goldschmidt’s final 1960 version of his article.