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TheMerchants Despatch Transportation Company (MDT, also known as theMerchants Despatch Refrigerator Line) was established in 1857 or 1858 by theAmerican Express Company of New York (then a freight forwarding service). The entity was reformed as a joint stock trading company on June 1, 1869, with ownership divided among theCleveland, Columbus, Cincinnati and Indianapolis Railway (CCC&I), theLake Shore and Michigan Southern Railway, and theNew York Central Railroad (NYC), all part of theCornelius Vanderbilt rail empire.

The MDT entered the refrigerated transit business around 1880, and within five years had 1,900reefers in service, making it one of the largest such concerns in the United States. Historian and author John H. White describes MDT as "the oldest corporate name connected with refrigerated transit to survive into modern times." The company began manufacturing cars on a small scale in 1883 and in spring of 1887 constructed a large manufacturing facility nearRochester, New York in a town they namedDespatch (present-dayEast Rochester). MDT hired 900 workers and embarked on an aggressive car building program; by 1900 the firm owned 6,687 units, slightly more than half of which wererefrigerator cars.

The East Rochester plant would grow in time to encompass some 64acres (with an adjacent rail yard of equal size), and would produce on the order of 36 cars per day. The installation became the main car plant within the New York Central system. MDT adopted the Wickes Patent into its refrigerator car design. Even with its own substantial manufacturing capacity, MDT at times purchased rolling stock from outside companies such asPullman in order to meet the demands imposed by its rapidly expanding shipping service.

The company incorporated in the State ofNew York in May, 1911. 3,400 reefers were sold to the NYC in December 1912, and 2,988 to the Lake Shore line, though all of the units were in turn leased back to the MDT. The firm was reincorporated as aDelaware corporation in 1923. Circa 1925, the NYC established a new subsidiary, theEastern Refrigerator Despatch (mirroring the expansion strategy of the rivalFruit Growers Express). Operation of the ERD, along with its 2,100 reefers, was quickly absorbed by Merchants Despatch. In November, 1928 the MDT purchased theNorthern Refrigerator Car Line (founded byMilwaukee'sCudahy brothers) and its 1,800 cars.

A holding company, Merchants Despatch, Inc., merged with the MDT in 1936; the new venture was chartered in Delaware on December 18. In 1962 the NRC was combined with Merchants Despatch. At the same time, greater emphasis was placed on auto carrier business; from 1961 to 1966, the company acquired nearly 1,200autorack cars (although the baseflatcars were owned by MDT, the rack structures were owned by the New York Central). MDT also entered theIntermodal freight transport business, and purchased 572 Flexi-Vancontainer flats (intended mainly for use in mail service onpassenger trains) between 1958 and 1965.

As part of the consolidation of facilities planned for the Penn Central merger, the car shop was closed down on April 1, 1970, and the 72-acre property was sold off.^[1] In July, 1985 the MDT assumed the responsibility for car weighing and inspection previously under the purview of theEastern Weighing and Inspection Bureau.

After ceasing construction, MDT would continue as a repair shop, and a car lessor to both railroad and private companies. As an independent lessor, it was able to outlast NYCs merger into Penn Central, and their collapse into Conrail. However, after the 1998 purchase of Conrail, MDT's assets were merged and the company dissolved in 2000.

Merchants Despatch Transportation Company Roster, 1900–1970:

Northern Refrigerator Car Line Roster, 1930–1960:

Source:The Great Yellow Fleet, p. 16.

• White, John H. (1986).The Great Yellow Fleet.Golden West Books, San Marino, CA.ISBN 0-87095-091-6.
• White, John H. Jr. (1993).The American Railroad Freight Car: From the Wood-Car Era to the Coming of Steel. Baltimore:Johns Hopkins University Press.ISBN 0-8018-4404-5.OCLC 26130632.
• Hinman, Roger C. (2011).Merchant's Despatch; Its Equipment and History. Signature Press, Wilton, CA.ISBN 1-93001-329-9.

• Rochester Images — contains images of the MDT car shops along with the Foster-Armstrong Company (later known as the American Piano Company and then Aeolian American Corporation).

• Refrigerator car lines of the United States
• American Express
• American companies established in 1857
• Transport companies established in 1857

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