Set of 4 Vintage Chicago Postcards Hotel LaSalle and Michigan Avenue

4 blank postcards, each measures 5.5" x 3.5" Old but in good condition. These cards were printed when domestic postage was 1 cent domestic and 2 cents foreign. Card descriptions 1. Hotel LaSalle rendering at corner of La Salle at Madison Street, Chicago matte finish 2. The Grand Ball Room Hotel La Salle Chicago photo, matte finish 3. The Blue Fountain Room Hotel La Salle Chicago photo, matte finish 4. Michigan Ave. Looking South by Moonlight, Chicago, IL dated 1929 drawing, matte finish; on back the card it says 73 Published by Gerson Bros., Chicago