deforest:

Interior N.Y. Subway, 14th Street to 42nd Street (1905)
by G. W. “Billy” Bitzer for American Mutoscope and Biograph Co. 

“Filming just seven months after the New York subway system opened, cameraman Bitzer captures a unique tracking shot with lights provided by another train running on parallel tracks in tandem with the photographed train. The startling variations within a predetermined form make this work a fascinating predecessor of structural films.” 
– R. Bruce Elder