found: nuc86-66734: Gregg, G. Progress in tractor power from 1898, 1966?(usage on IaHi rept.: Oliver Corporation)
found: Wendel, C.H. Oiver Hart-Parr, 1993(Oliver Corporation)
found: Mood indust., 1958(Oliver Corporation; incorp. in 1929 as Oliver Farm Equipment Co.; pres. name since 1944) 1960 (White Motor Corporation; in 1960 acquired...Oliver Corp.)
found: NUCMC data from Historical Society of York County for A.B. Farquhar Co. Records, 1887-1945(A.B. Farquhar Co., manufacturers of agricultural implements and steam engines became division of Oliver Corp. in 1952; terminated production in 1961)
notfound: NUCMC data from Floyd County Historical Society (Iowa) for White Motor Corporation. Records, 1896-1993
