Here are some good starting places for archives searching.
Brock University Archives & Special Collections - Niagara collection, Loyalist collection, Autism collection, Masonic Books collection, War of 1812 collection
For original, archival materialson all aspects of life in the Niagara Peninsula use keyword searches in the library catalogue.
e.g. search: Author = "Brock University Library. Archives." AND Keyword = "Niagara Power"
For more information, visit the Archives & Special Collections on the 10th floor of the Library.