Carrier and Morrill closed a real estate deal to build a train depot there. The town was platted adjacent and north of the newly completed Cairo and Vincennes Railroad. In 1873, the first postmaster was appointed to Carrier's Mills (the name the railroad had assigned to the new stop). The town's name changed again to "Carrier Mills" when several more woodworking factories were built. The village was incorporated on September 18, 1894. After an influx of settlers from the south, due to the Civil War, the tiny village amidst timber and farms grew quickly. Today, in legal documents its name remains Morrillsville. Carrier Mills did not have a single brick building and the sidewalks were of boards. The business district was mainly on Oak Street from the First National Bank west to the Texaco Gas Station, and all of frame construction. A disastrous fire in February 1908 burned everything on the north side of Oak Street. In March 1908, fire burned everything on the south side of the street, from Main to Mill, except the Old Woolcott Mill Exchange. The businessmen began immediately to rebuild, all of brick construction.