Institutional archives and other records can be found in many formats, and in many places. Papers, correspondence, administrative records, and official publications are most often housed within a given institution's archives, and the archives themselves are often housed at university libraries. These materials can be in print (either in the original paper version or in book form), microform, or in digital facsimile. With the exception of most digital facsimiles and printed books/magazines, this material must be consulted on-site. To determine where material is housed, consult the website of the institution you are researching, or ArchiveGrid, a guide to archives in the U.S. and abroad. Some digtial archives may be listed on ArchiveGrid, but not all; it is best to contact the library/archive directly.
Below are a few suggestions for getting started in finding such information, and some sample links. Also consult the library's research guide for oral history for more suggestions.