Complex sentence: In New York Harrap signed off and had a month to find another ship, instead, after traveling to Washington DC for his mail and to see the Capital, he hitched to Canada where he was able to enter and work as an immigrant.
Split into simpler sentences: In New York Harrap signed off and had a month to find another ship. Instead, after traveling to Washington, D.C. for his mail and to see the Capital, he hitch hiked to Canada where he was able to enter and work as an immigrant.