Copy of a blueprint with 'NYCRR (MCRR), Signal Dept., Detroit Mich., Dutton (East) Ontario, Track, Line and Signal Circuits, July 13, 1953' as the title, in black. It is the second revision of the document. The blueprint displays electrical diagrams overlaid on a track map. there is an area outlined on the right edge. Corrections have been made with red and green pencil. It is four-hole punched and was 'Printed in U.S.A.'.
The item is in somewhat good condition. It is dirtied and has been folded, so there are 3 vertical creases across the page.