(The photographs reproduced here are from my grandfather's copy of a John L. Stoddard portfolio. The title page is reproduced below. I think I'm pretty safe using these images because they are pretty old (1890-1910?), and because my copy of this portfolio doesn't actually even have a copyright statement or copyright claim. More information on John Stoddard and his Lectures are available through Google.)
(Odograph - n. an instrument recording distance traveled, especially by a pedestrian.)