In this note, we point attention to and briefly discuss a curious manuscript of Einstein, composed in 1938 and entitled "Unified Field Theory," the only such writing, published or unpublished, carrying this title without any further specification. Apparently never intended for publication, the manuscript sheds light both on Einstein's modus operandi as well as on the public role of Einstein's later work on a unified field theory of gravitation and electromagnetism.

中文翻译：

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爱因斯坦关于统一场论的华盛顿手稿**

在这篇笔记中，我们注意到并简要讨论了爱因斯坦 1938 年撰写的一篇奇特的手稿，题为“统一场论”，这是唯一一种已发表或未发表的著作，没有任何进一步的说明。这份手稿显然从未打算出版，但它揭示了爱因斯坦的作案手法以及爱因斯坦后期关于引力和电磁学统一场论的工作的公共角色。