Sinclair Prairie Oil Company - legal cases, Prairie merger, lands in Mexico, Transwestern Oil Company, 1927 - 1949

Sinclair Prairie Oil Company - Letts, Charles L. legal case (1934), Prairie deal factual data - correspondence and memorabilia (1930-1934), Prairie Deal factual data - Prairie suits 1 of 2 (1927-1930), Prairie deal factual data - Prairie suits 2 of 2 (1930-1934), lands in Mexico "Fortuno tract" (1931-1933), Slick, Thomas B. properties, Transwestern Oil Company (1929-1949); Sinclair Prairie Oil Marketing Company - Standard Oil Company of Ohio delay (1932); Prairie Pipe Line Company - Warren, DeWitt H. legal case - intervening petitioners correspondence (1932-1934), intervention and closing papers (1934), intervention and pleadings (1932), intervention and working papers (1932-1934);