Use "AND" or "OR" or "NOT" to narrow or broaden your search:
Use AND to make your search more specific and narrow your search.
Use OR to search for clusters of related terms enclosed in parentheses to broaden your search. VERY IMPORTANT when searching for images! Example: (train* OR locomotive* OR steam engine OR coach)
Use NOT to exclude words to narrow your search. Useful for excluding fonds or collections from your search.

Level of description: Narrow search to Fonds, Collection, Series, Subseries, File, or Item
Digital object available: Select "Yes" if you are only interested in finding digitized content
General material designation: Textual record (documents), Graphic material (e.g. photographs), Sound recording (audio), Moving images (videos), Cartographic material (e.g. maps), Architectural drawing, Technical drawing, and Object
Date: Filter to a single date or date range