Memorandum issued by Chief of Air Service, American Expeditionary Forces, to Marc Lagen, May 28, 1918. Notifies Lagen of his recommendation for promotion to the grade of Captain. Signed by Brigadier General Benjamin D. Foulois.
Special Orders No. 17, Headquarters Services of Supply, American Expeditionary Forces, March 29, 1918. Instructs Marc Lagen and two other men to proceed to Saumur, France and report for duty with the Artillery School Commandant.
Special Orders No. 13, Headquarters Services of Supply, American Expeditionary Forces, March 25, 1918. Assigns Marc Lagen to duty at Headquarters Air Service, Services of Supply.
Special Orders No. 20, Headquarters Services of Supply, American Expeditionary Forces, April 1, 1918. Confirms the necessity of Marc Lagen's travel to St. Dizier, France per verbal orders of Chief of Air Service.
Special Orders No. 39, Headquarters Services of Supply, American Expeditionary Forces, April 20, 1918. Instructs sixteen men, including Marc Lagen, to proceed to Souge, France upon completion of their current course of instruction.
Special Orders No. 39 (extract), Headquarters Services of Supply, American Expeditionary Forces, April 20, 1918. Instructs two men, including Marc Lagen, to proceed to Souge, France upon completion of their current course of instruction.
Telegram to Headquarters, Service of the Rear, American Expeditionary Forces, March 16, 1918. Orders Marc Lagen relieved from duty with the 54th Cie Aerostiers and to report to Chief Air Service.
General Orders No. 150, American Expeditionary Forces, September 5, 1918. Amendment of orders regarding procurement of equipment and documentation of such.
Memorandum issued by Captain Birge M. Clark, American Expeditionary Forces, November 17, 1918. Certifies Marc Lagen's record of hours in the air with the Third Balloon Company.