These are going to be the most helpful resources for your first year seminar, but you can always stop by the Research Desk for additional support.
This is a very well done guide for researching local Lewiston history, including archival materials and photographs. This is particularly helpful or researching the Francophone history of Lewiston and Maine.
Oxford Bibliographies offers peer-reviewed annotated bibliographies on specific topics in a growing range of subject areas. There are at least 50 specific topical bibliographies in each subject area. Each of these features an introduction to the topic. Bibliographies are browsable by subject area and are keyword searchable.