The Jacob Bursey Diary Kept While Serving as a Member of Byrd Antarctic Expedition I, dated 1929, contains daily entries from Bursey and a memoranda note where he evaluates his time in Antarctica. Each entry begins with a weather report. Some entries are brief and only contain information about the weather conditions and the temperature. Other entries provide more details about Bursey's preparation and work to mark safe trails for the expedition party, his experience camping out on the trail, and his interactions with the dogs on his sled team.