 In his second season with the Rovers, Allum was named a First Team EAHL All-Star, and earned a call up to the Philadelphia Ramblers of the IAHL.In 1939-40, the Rangers, who held his rights, loaned Allum to the Black Hawks, for whom he played one game without scoring before being returned to the Ramblers.In 1940-41, Allum played in one game for the Rangers, recording an assist against the Toronto Maple Leafs, but was returned to Philadelphia afterwards.