Milwaukee Road. Two booklets (one for north line and the other west line) suburban trains. The booklets are divided by fare zones along with the station names. The nearest thing I can think of is that these were used by train conductors to sort their cash fare collections aboard the train. Based on the stations listed I estimate that these were used in the 1970's. Both measure 2" x 6 3/4" and have slots for each fare zone. Shipping via USPS First Class Mail. I will also consolidate orders, if requested, to save on shipping costs.