Da Vinci, Leonardo, The Notebooks of Leonardo Da Vinci rendered into English and introduced by Edward MacCurdy New York: Reynal and Hitchcock, 1939.
Great example of historical evidence of visual journaling.
Kalman, Maira, The Principles of Uncertainty, New York: Penguin, 2007.
Contemporary artist who uses visual journaling as her art form.
Kahlo, Frida,The Diary of Frida Kahlo: An Intimate Self-Portrait introduction by Carlos Fuentes ; essay and commentaries by Sarah M. Lowe. New York : H.N. Abrams. 1995.
An example of how an artist used visual journaling to collect observations and sketches for reference.