Diary belonging to an unidentified Breckenridge, Colorado resident. Circa 1911. Handwritten entries begin on Sunday, January 1, 1911 and end Sunday, December 31, 1911. Contents appear to be a daily log of weather, work activities, and social life. Bound in dark red leather with plain front and back covers; embossed with "The Excelsior Diary 1911". Printed pages include a church calendar, astronomical information, monthly calendars for 1911, lists of states and territories, values of foreign currencies and more.

Breckenridge residents Jan M. Radosevich and Anne Ostyre-MacDonald prepared and submitted the National Register of Historic Places Inventory-Nomination Form in 1980 on behalf of the Town of Breckenridge, Colorado.