Prepared by the Engineering Department of the Sanitary District of Chicago.
Blueprint. Printed on 2 sheets, joined. Signed "Dr. James B. Angell, compliments of L. Cooley." Stamped on verso: "Sanitary District of Chicago, Jan 2 1896, received Division 2" and F. Mayer & Co. logo. 1 profile: photocopy, hand col.; 28 x 375 cm.