1927 Owned Detroit Materials & Transportation Co., Detroit, MI.
1932 Owned Pine Ridge Coal Co., Detroit; converted to self-propelled fuel lighter.
1934 Renamed PINE RIDGE.
1941 Owned Nicholson Universal Steamship Co., Detroit.
1942 Owned Overlakes Freight Corp., Detroit.
1943 Sold foreign, Honduras; owned Honduras Shipping Co., Tegucialpa, Honduras.
1952 Sold foreign, Brazil; owned Cia de Nav. Santense Ltda, Santos, Brazil.
