Image research is a little different than other kinds of primary source research. Depending on the type of image that you are looking for, you might be checking Google Images for clues about where an image appeared, then tracking down the original source that the images in Google came from. Or, you may be able to find a stand-alone image in a specialized archival/image database. Interpreting the images often also requires some background in art history, or in technical processes for photography, illustration or publishing.
Some general techniques for finding historic images:
These databases are, for the most part, made by Archives, Libraries and Museums. They generally include photographs as well as digitized archival documents, maps, etc. Most of the material in these databases comes from original photographic prints or individual archival documents. Scroll down farther to find images that were published as illustrations within books/magazines, or fine art and artifacts.
If you're not sure where to find an image or are just getting started, Google Images can be a powerful search tool. It does have some major drawbacks however:
With these limitations in mind, here are some tips for getting the most out of Google Images:
Some of the best images -- particularly if you're studying an event that occurred during the "Golden Age of Illustration" (1880-1920s) -- are not to be found in archival image databases, because they originally appeared within publications such as books and magazines. These can be extra difficult to locate, however. A few tips:
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