The National Archives Eyewitness site highlights historical events as they were recorded by the individuals that experienced them. Interesting stuff, to be sure, but the quantity of documents is a little scant.
The photo above is from a 1919 transcontinental military exercise to determine the condition of the coast to coast roadways. 29 year old Dwight D. Eisenhower was one of the observers on the trip and reported that it took a whopping 62 days over terrible roads to complete the journey. Though the mission was supposed to be self-sufficient, it would have been rude to turn down free lemonade.