[The Bronx Office of the Topographical Bureau.]

[The Bronx Office of the Topographical Bureau.]

[Construction Bureau.]

[Louis Risse, Chief Engineer, Topographical Department.]

[Construction Bureau.]

[Surveying and measuring base lines in the East Bronx.]

[Triangulation of Greater New York.]

[Pearsal Avenue north of Pelham Parkway.]

[Department of Street Improvements.]

[Rosedale and Story Avenues.]

[Hunts Point, Casanova Avenue near Oakwood Avenue.]

[Noble Avenue and Randall Avenue.]

[Louis Risse, chief engineer of the Bronx Street Improvements Department.]

[Bronx Department of Street Improvements.]

[Department of Street Improvements, drafting room and map makers.]

[Surveying Tower.]

[Department of Street Improvement, chief engineer's office.]

[Randall and Balton Avenues, Clason Point.]

[Randall Avenue near Sound View.]

First sketch of a transverse road drawn by Louis A. Risse as visioned by him in the conception of the original planning of the Grand Boulevard and Concourse 1892