The National Greenback Party delegates assembled in the Interstate Exposition Building in Chicago on Wednesday , June 9 , 1880 . The Republican convention took place in the same building , and had only just ended after a record 36 rounds of balloting . When the Greenbackers arrived , the Republicans ' banners still hung from the walls , so the delegates were greeted by images of Abraham Lincoln and Thaddeus Stevens as they entered . The building , popularly known as the " Glass Palace " , had been built in 1873 for an Interstate Industrial Exposition
Republican convention
1880 Republican National Convention
1880 Greenback National Convention