The 1897 war was during the golden age of war correspondents, and nothing else was going on just then, so they all headed there. In addition to being paid by their papers for their articles, they came home and wrote books and got paid for that, too.
Ashmead-Bartlett, Ellis. The Battlefields of Thessaly, with Personal Experiences in Turkey and Greece. (London, 1897)
Davis, Richard Harding. A Year From a Reporter's Note-Book. Harper & Brothers, New York. 1903. Has a chapter on the war, as well as photos Davis took.
Mersey, Captain Clive Bingham. With the Turkish Army in Thessaly. (London, 1897)
Nevinson, Henry W. Scenes in the Thirty Days War Between Greece and Turkey, 1897. (London, 1898)
Palmer, Frederick. Going to War in Greece. (New York, 1897) Another photographer.
Pollock, Wilfred. War and a Wheel: The Greco-Turkish Was as Seen from a Bicycle. (London, 1897)
Rose, William Kinnaird. With the Greeks in Thessaly. (London, 1897)
Steevens, George W. With the Conquering Turk: Confessions of a Bashi-Bazouk. (London, 1897)
Strantz, Viktor von. The Greco-Turkish War of 1897 from Official Sources. By a German Staff Officer. Translated by Frederica Bolton (London, 1898) This is probably the closest thing to a real history.
The War Dispatches of Stephen Crane
Hellenic Army General staff. A History of the Hellenic Army, 1821-1997. Army History Directorate Publication. (Athens, 1999).
Wars of the Nineties has a long chapter on the war, as well as illustrations from the Illustrated London News.
Born to Rebel: The Life of Harriet Boyd Hawes by Mary Allsebrook. Oxbow Books, 2002. Ms. Boyd (as she was then) was a nurse with the Greek army, and later conducted an archaeological dig on Crete.
Active Service by Stephen Crane is a historical novel dealing with the war. Some useful stuff since Crane was actually in Greece as a correspondent. So was his lady friend, but that was a secret.
Richard Harding Davis also wrote a play, The Galloper, about the war. This was during the period when playwrights wrote up long, detailed descriptions of the sets, so it has good stuff like the color of Greek ammunition boxes (blue).
I have the books by Clive Bigham, W. Kinnaird Rose and Mary Allsebrook in fairly new paperback; the rest you'd need to get through interlibrary loan or a used book dealer.
Best of luck!
Grelber