Albert Sonnichsen (May 5, 1878, San Francisco, California- August 16, 1931, Willimantic, Connecticut) was an American adventurer, journalist, and author. Circa 1904 he met representatives of the Internal Macedonian-Adrianople Revolutionary Organization in the US. He became interested in the movement and went to Bulgaria. His first dispatch for the New York Evening Post from Kustendil is from November 1904. He spent 1905 travelling around the country and entered Ottoman Macedonia in early 1906. He remained there until November of the same year, all the while continuing his dispatches for the Post.
In 1909 he published a book about his time with the comitajis in Macedonia (Confessions of a Macedonian Bandit).
Towards the end of World War I the US government was gathering data to inform the upcoming peace negotiations and asked Sonnichsen to write a report about Macedonia. In his report he gave background information about the region and discussed the pros and cons of some of the potential post-war solutions.
Correspondence for the New York Evening Post
- The Secret Republic Of Macedonia (Saturday, 12 November 1904)
- A Day And Night In Kustendil (Saturday, 07 January 1905)
- The Bulgar And The Filipino 1Of2 (Saturday, 01 April 1905)
- The Bulgar And The Filipino 2Of2 (Saturday, 01 April 1905)
- The Day Of The Fourty Martyrs (Saturday, 15 April 1905)
- Life In The Kustendil Ghetto (Saturday, 17 June 1905)
- On Foot In Bulgaria (Saturday, 15 July 1905)
- Across The Serbian Frontier (Tuesday, 05 September 1905)
- Joining The Bulgar Comitajis (Saturday, 07 April 1906)
- Dead Spies And Village Cinders (Saturday, 14 April 1906)
- Camp Life With Luka’s Comitajis (Saturday, 02 June 1906)
- Among The Turks In Disguise (Saturday, 09 June 1906)
- How The Turks Wiped Out A Cheta (Saturday, 20 October 1906)
- The Underworld Of A Revolution (Saturday, 12 January 1907)
- Socialism’s Grip Upon Bulgaria (Saturday, 23 February 1907)
Report for the US government’s Inquiry during WW I (1918)