—, "Jacob Gordin", in The Cambridge History of English and American Literature in 18 Volumes (1907–21). VOLUME XVIII. Later National Literature, Part III. XXXI. Non-English Writings I. § 52.
—, Partial list of plays on 4-wall.com. Probably more reliable for names of plays than for specific dates.
—, Harvard Yiddish Index, useful for some titles and dates. Their dates appear to be publication dates, which may have considerably lagged first performance, so they are listed above as "no later than..."
ジェイコブ・アドラー Adler, Jacob, A Life on the Stage: A Memoir, translated and with commentary by Lulla Rosenfeld, Knopf, New York, 1999, ISBN 0679413510. This is probably the most reliable for English-language titles of some of Gordin's plays.
イスライル・ベルコヴィチBercovici, Israil, O sută de ani de teatru evreiesc în România ("One hundred years of Yiddish/Jewish theater in Romania"), 2nd Romanian-language edition, revised and augmented by Constantin Măciucă. Editura Integral (an imprint of Editurile Universala), Bucharest (1998). ISBN 9739827225. 98.
ルラ・ローゼンフェルド Rosenfeld, Lulla, "The Yiddish", ニューヨーク・タイムズ, June 12, 1977, 205. This provides enormous detail on his start in New York theater with Adler and Mogulesko.
ザルメン・ジルベルツフェイク Zylbercweig, Zalmen, editor, "Gordin, Yankev", in "Leksikon fun idishn teater", vol. 1, Farlag "Elisheve", New York, 1931, pp. 392-461. This five volume encyclopedia on the Yiddish theatre is an essential reference source for information on actors, writers, and plays.