For the past year I believed my Great Grandfather, Barney Newmark, and his father Samuel Newmark, traveled from England to Canada in May of 1904, spent three years in Canada, and then crossed the Canadian border into the US in July of 1907, returning to England in 1908, delivered good news, and the family permanently immigrated to the US in two trips in 1909 and 1910.
Part of that was based on this image
It comes from the Canadian border crossing document from July of 1907. The month/year for their arrival in Canada is pretty legible, I think. I realize that 4s and 7s can look alike, but we have a 7 in the same hand two boxes over, so I was pretty confident Samuel and Barney spent three years in Canada, though I knew I wouldn't know for certain until I found the documentation. I also wondered if I would ever find any footprints of where they went and what they did in Canada during those three years.
Today I found their Canadian manifest in the Canadian Passenger Lists database (1865-1935) on Ancestry. They arrived in Quebec on May 11, 1907. The ship was the Tunisian. They only spent two months in Canada. They probably left very few Canadian tracks.
I now have all the manifests documenting all their ocean travels and border crossings except for how they got from Poland to England in approximately 1893.