Letter to Mildred Washburn from Marc Lagen, June 30, 1914. Determines details of performance by LADA. Includes an informational leaflet about music artists under Lagen's management. Two pages.
Letter to Mildred Washburn from Marc Lagen, June 22, 1914. Discusses possible performance by LADA. Includes an informational leaflet about music artists under Lagen's management. Two pages.
Letter to Stars and Stripes editor from Marc Lagen, October 27, 1918. Forwards an article written by one of the Balloon men (article not included). One typed page.