1866, OCTOBER:  Birth of International & Great Northern Railway its charter was issued for the Houston and Great Northern Railroad Co.

1870, AUGUST: International Railroad Co. obtained charter to build from St. Louis to Texarkana to Laredo, via Austin and San Antonio. Construction started in Texas at Longview and Hearne.

1870, DECEMBER: Contract let for first 100 miles of construction by Houston & Great Northern.

1871, FEBRUARY: First locomotive delivered to H&GN.

1872, FEBRUARY: Negotiations between International RR Co. and H&GN resulted in their consolidation to form International & Great Northern Railway.

1873, JANUARY: Palestine reached from Longview.

1873, MAY: Palestine reached from Houston. I&GN acquired charter rights to Victoria and Columbia RR Co. including extension to Laredo.

1873, SEPTEMBER 18: Jay Cooke & Company of Philadelphia closes its doors beginning the panic. I&GN falls apart.

1874, MAY: I&GN general offices moved from Houston to Palestine.

1874, DECEMBER: Rockdale reached from Hearne.

1876: Austin reached and was Southern Terminus for several years.

1878, APRIL - 1879, NOVEMBER: I&GN in receivership.

1880, MAY: Contract let to build from Austin to San Antonio; completed February 1881.

1880: First I&GN Depot was a house adjacent to the tracks.

1881, JANUARY: Contract let for line to Laredo; completed in December 1881.

1881, JUNE 1: President Gould of MKT acquires I&GN from President Gould of I&GN with two shares of MKT stock for every one share of I&GN stock.

1881, JUNE 25: MKT extended from Greenville to branch with I&GN at Mineola for $2M (50 miles of track).

1881, JULY: I&GN general offices moved from Palestine to St. Louis.

1881, SEPTEMBER 28: Since the I&GN needed a branch line to tap the lumber in the Trinity Valley, the Trinity & Sabine Railway was chartered to build from Trinity to Corrigan (Polk County).

1882, DECEMBER 9: Gould buys Trinity and Sabine Railway for Missouri Pacific and sells it to the MKT, although the nearest Katy line was 150 miles away.

1883, DECEMBER 18: Jay Gould and Russell Sage purchased Galveston, Houston and Henderson Railroad for MKT but had leased it to the I&GN.

1885: First International and Great Northern depot built in New Braunfels.

1886: James Stephen Hogg was elected Attorney General of Texas. His platform was to compel railroads to maintain their General Offices in Texas, keep properties in good working condition and provide adequate service.

1888, MAY: General offices moved from St. Louis to Palestine.

1888, JUNE 1:  Jay Gould looses control of the MKT.  George Eddy and Harrison C. Cross appointed Katy coreceivers since Gould's management wouldn't turn over the records.  MKT's lease with the Missouri Pacific terminated.  Vicious fight over I&GN ended when I&GN was awarded to MoPac in exchange for a cash settlement.

1903, MAY: Line completed from Spring through Valley Junction, Waco to Fort Worth.

1905, JULY 1: I&GN permits MKT use of tracks between Austin and San Marcos. This allows Katy to route trains direct from San Antonio to Austin, rather than through Smithville and San Marcos.

1907, MARCH: Current depot built in New Braunfels.

1908 - 1911: Railroad in receivership with name changed to International and Great Northern Railway Company.

1914 - 1922: Receivership with name change to International - Great Northern Rail Road Co.

1924, JUNE: I-GN ceased to be independent. Sold to the New Orleans, Texas & Mexico Ry, a subsidiary of the Missouri Pacific.

1926, AUGUST: New Orleans, Texas and Mexico Ry paid $600,000 to Harry Landa of New Braunfels for his short line, San Antonio Southern Ry Co.

1928: 1,148,004 tons of limestone (one percent of total U.S. Production) shipped from Comal County.

1971, MAY: Amtrak created; passenger service to and from New Braunfels discontinued.

1981, DECEMBER: Missouri Pacific merged with Union Pacific.

1984, OCTOBER: Organizational meetings initiated by a group which became the New Braunfels Historic Railroad and Modelers Society.

1985, JUNE: New Braunfels Historic Railroad and Modelers Society (NBHRMS) chartered by the State of Texas.

1986, OCTOBER: New Braunfels Historic Railroad and Modelers Society granted a lease of the abandoned, former International & Great Northern, Missouri Pacific and Union Pacific depot. Restoration and conversion of the depot into a museum is initiated.

1987, JULY 21: The New Braunfels Historic Railroad and Modelers Society accepts delivery of a Missouri Pacific caboose which they purchased and restored.

1992, MAY 13: San Antonio Conservation Society presents the New Braunfels Historic Railroad Society with a 1992 Historic Preservation Award for restoration of the depot.

1993, NOVEMBER 14: National Railway Historical Society awards charter for the Bluebonnet Chapter of the NRHS to New Braunfels Historic Railroad and Modelers Society.

1993, DECEMBER 20: An 0-6-0 T Porter oil fired steam locomotive (Steam Engine) is delivered to railroad museum. The NBHRMS purchased the engine for restoration.