Archives of the Soviet Communist Party and Soviet State Microfilm Collection
The Hoover Archives has 11,676 microfilm reels, each containing approximately 850 pages of documents relating to political conditions in the Soviet Union from 1917 to 1992. The documents and finding aids came from three Russian archives: the Center for the Preservation of Contemporary Documentation (Tsentr khraneniia sovremennoi dokumentatsii - TsKhSD), the Russian Center for the Preservation and Study of Documents of Most Recent History (Rossiiskii tsentr khraneniia i izucheniia dokumentov noveishei istorii - RTsKhIDNI), and the State Archives of the Russian Federation (Gosudarstvennyi arkhiv Rossiiskoi Federatsii - GARF).

Trubetskoi Papers
Grigorii Nikolaevich Trubetskoi was a prominent Russian diplomat, foreign policy analyst, and head of the Near Eastern affairs department in the Russian foreign ministry before World War I. Most of his papers--an important source of information on the origins of World War I, religious politics, and Russian foreign affairs in the early twentieth century--are digitized and available online.

Museum of Russian Culture Microfilm Collection
In 1999, the Hoover Institution received a generous grant from the National Endowment for the Humanities for a two-year project to process and microfilm part of the Museum's more significant archival holdings. The primary goal of the project was to make these collections available to scholars in the reading room of the Hoover Institution Archives in microfilm form, because conditions of access and use at the Museum itself are difficult due to insufficient resources.

Museum of Russian Culture Microfilm Collection (Russian version)
Музей русской культуры в Сан-Франциско был основан в 1948 г. для хранения документов русской истории и предметов русской культуры. За последние 50 лет музей приобрел уникальные исторические материалы, относящиеся прежде всего к Российской послереволюционной эмиграции и жизни эмигрантов в 1920-1945 гг., а также к дореволюционной России, периоду революции и Гражданской войны, судьбе перемещенных лиц и деятельности русских эмигрантских организаций.

Holy Trinity Orthodox Seminary Microfilm Collection
In 2007, the Hoover Institution of War, Revolution and Peace received a generous grant from the National Endowment for the Humanities for an eighteen-month-long project to preserve, process, and microfilm a number of significant collections of Holy Trinity Seminary’s archival holdings. The primary goal was to preserve the materials and make them accessible to researchers in the reading rooms of both the Hoover Institution and Holy Trinity Seminary in microfilm form, as those materials had previously not been generally available to outside researchers.

Holy Trinity Orthodox Seminary Microfilm Collection (Russian version)
Коллекция микрофильмов Свято-Троицкой духовной семинарии
В 2007 г. Гуверовский институт получил щедрый грант от Национального фонда развития гуманитарных наук для восемнадцати-месячного проекта по сохранению, обработке и микрофильмированию ряда значительных коллекции архивных фондов Свято-Троицкой духовной семинарии. Основной целью было сохранение материалов и обеспечение свободного доступа для исследователей к микрофильмам коллекций в читальных залах Гуверовского института и Свято-Троицкой духовной семинарии, поскольку ранее материалы большей частью не были доступны для внешних исследователей.