This document provides a summary of 5 postcards from a US-36 roadtrip from Ohio to Colorado. It describes points of interest along the route such as clay workings in Uhrichsville, Ohio and Zane Shawnee Caverns in Ohio. It also discusses places related to US presidents like Rutherford B. Hayes' birthplace in Delaware, Ohio and sites involving Abraham Lincoln in Illinois. Further locations mentioned include Hannibal, Missouri known for its connection to Mark Twain, and landmarks in Denver, Colorado at the route's end.