Migration between Canada and the United States was far more complex than a one-way journey north or south. Families crossed the border repeatedly, motivated by opportunities, community, and survival. This webinar explores four lesser-known migration pathways that genealogists often overlook.We begin with the New England Planters, who settled in Nova Scotia after the Acadian expulsion, with some later returning to New England or moving elsewhere in the Maritimes. Next, we trace Black migration, from Loyalists and Underground Railroad refugees to 20th-century workers commuting daily between Windsor and Detroit. The session then turns to industrial labourers who worked seasonally in lumber, mining, fishing, or in factories, leaving behind valuable records in both countries. Finally, we examine Depression-era relocations, when Prairie families sought survival in the U.S. Midwest and Americans looked north to Canadian farmland. Throughout, case studies illustrate research strategies and highlight the records that capture these movements. Attendees will learn how to: recognize overlooked migration patterns across the border; identify the key records generated by each pathway; utilize maps, timelines, and the FAN methodology to trace family histories; correlate records across Canada and the U.S. to prove identity; overcome challenges such as surname variations, missing records, and changes in boundaries.