These blotters from the Dale Hastin collection advertise Rock Island trains in the Midwest. The first one advertises trains from the Twin Cities to Des Moines, Kansas City, and St. Louis. Though it is undated, it appears to be from the 1920s or early 1930s.
The second blotter advertises sleeping car service between St. Joseph and Chicago. St. Joseph was not on Rock Island’s main line and in the late 1930s Rock Island had one train a day from St. Joseph to Trenton, Missouri, where it met the Californian. This undated blotter appears newer than the one above, and may be from the late 1940s or early 1950s, as the St. Joseph-Trenton train was discontinued by 1957.
The last blotter isn’t necessarily a Midwestern blotter but it doesn’t fit in my other Rock Island blotter categories either. The image of a Diesel and steam locomotive together indicates the blotter is probably from the 1930s or possibly the 1940s.