Here is a 20 page paperback booklet titled "The Old Motor System and the New" by S.A. Kinnier Wilson, M.D. F.R.C.P. Reprinted from the Archives of Neurology and Psychiatry, April, 1924, Vol.II, pp.385-404.  Published by the American Medical Association, Five Hundred and Thirty-Five North Dearborn Street, Chicago. 

10 by 6 3/4 inches. 20 pages. Staple-bound paperback in the original light green printed wrap. The front wrap has a small chip/tear at the bottom corner of the spine, a tiny chip at the top front foredge corner, and a small bruise along the top edge. The bottom front corner of the wrap has a slight knock/bend, causing faint creasing on the bottom corner of the pages inside. There is some age toning, dustiness to the wrap and the contents. Rust to the staples. Please see the photos and please explore my other listings for more medical offprints and books.