The Others
The Beech 18 had many competiters. Several types were converted military surplus aircraft. Some were larger and many were smaller owner flown types.

IBM's Fairchild F-27	Mexican F-27	IBM F-27
US STEELS early paint scheme F-27	The classic Douglas DC-3 corporate version	US STEELS CANADA division DC-3
Convair 240	F27	F27
B STEEL's G1