Johnstone, Mark was born on August 20, 1953 in St. Louis. Son of John T. and Mary (Xenakes) Johnstone.
Bachelor, Colorado College, 1975;
Master of Fine Arts, University of Southern California, 1982.
Contributing editor, Artweek Magazine, Oakland, California, 1980-1989;
freelance writer, Inglewood, California, since 1977. Guest curator La Jolla (California) Museum Contemporary Art, 1985, Los Angeles Mcp. Art Gallery, 1992; curator, consultant exhibitions Security Pacific Corporation Los Angeles, since 1988.