The line, which operated between 1959 and 2017, ran from Canton, Baltimore to the Mondawmin Metro Subway Station, serving the communities of Butcher's Hill, Little Italy, and Sandtown-Winchester.

Between 1893 and 1931, the Route 7 designation was used for a streetcar that operated between Govanstown and Irvington as a short-turn version of the No.

Bus Route L began serving Reisterstown Road to Pikesville on July 3, 1929.

But a year later, Route M-17 was modified to serve Rosewood as well as the T. Rowe Price Owings Mills campus.

Midday service to Red Run existed briefly in 1999, but was discontinued due to low ridership.

Routing was also modified to serve the Owings Mills Metro Subway Station.

[13] Other parts of Route M-17 that had low ridership were also discontinued, including those to the Owings Mills Corporate Campus and T. Rowe Price.

[14] On August 30, 2009, following the closure of Rosewood, Route M-17 was discontinued and the Red Run Portion was absorbed by the 59.