1877: Guenther replaces his original San Antonio mill with a larger building as construction of a railroad to San Antonio expands his ability to ship flour out to other parts of Texas and surrounding states.

1878: Guenther Mills becomes C.H. Guenther & Sons, as Fritz, 21, and Arthur, 19, join their father in a partnership.

1888: C.H. Guenther & Sons wins four first premiums for quality at the San Antonio International Exposition.

1892: Steel rollers begin replacing millstones to grind grain, allowing greater control and increasing production. Other new technology soon to be implemented includes steam power and the latest sifting equipment.

1894: C.H. Guenther & Sons becomes C.H. Guenther & Son, as Arthur Guenther leaves to join his wife's relatives in a competing company known as Liberty Mills (soon to be called Guenther Milling Company). During its some 50 years of existence, the new mill never overtakes the older, established C.H. Guenther & Son, Inc.

1898: Following the death of eldest son Fritz, C.H. Guenther & Son incorporates under the management of youngest son Erhard, 30.

1899: During a brand name disagreement with the breakaway son's Guenther Milling Company, C.H. Guenther & Son trademarks 12 new flour brands, among them "Texas Pioneer," bearing the likeness of founder C.H. Guenther. White Wings, soon to be known as "La Paloma," is also introduced.