Claim: Milwaukee Road class F7 was on a run between Chicago and Milwaukee on the "North Woods Hiawatha" but  the right main crosshead froze in its guide 73 miles from Milwaukee.
Evidence: On July 27, 1950, F7 #102 was on a run between Chicago and Milwaukee on the "North Woods Hiawatha." 73 miles from Milwaukee, the right main crosshead froze in its guide.