Article archives. Here's some copies and links of published written and videoed reports from MayanWhiteWater-land. (If you know of others you think should be listed here, please let me know.)
Río Cahabón: "12 Top Jungle Rivers", Paddler magazine, January 1999.
Ríos Matanzas, Lanquín, Cahabón, Polochic: "Whitewater High", by Joe Greiner, American Whitewater magazine, September 1995.
general: "Got Guat?", by Greg Schwendinger, Paddler magazine, March 2006.
Río Copón descent: First Descents: In Search of Wild Rivers, with chapter titled "Al Copón" written by Bruce Keller and with photos by Greg Schwendinger, Menasha Ridge Press, 2009.
Río Copón non-descent: "Acess Denied", Canoe & Kayak magazine, digital edition, March 2012.
Río Machaquilá: Machaquilá, book by Albert Lisi. Autobiographical account of an intrepid traveller back in the 60's who barely survives the jungle and Río Machaquilá, a fun read, Hastings House 1968.
guidebook: Honduras: The Undiscovered Country by Andrew Hibbard of Ríos Honduras, 1997.
Río Sico: "Rumble in the Jungle", by Larry Rice, Canoe & Kayak magazine, November 2003.
Río Cangrejal: "12 Top Jungle Rivers", Paddler magazine, January 1999.
guidebook: A Gringo's Guide to Mexican Whitewater by Tom Robey, 2nd edition 2000.
Río Jataté and Río Agua Azul: kayak video No Big Names 2: Amped, 2003.
Río Agua Azul: "Jungle Kayakers" episode of National Geographic Explorer TV show, 1990.
Río Chich & Chen Cave: Rivers of the Underworld documentary.
Río Agua Azul: "Agua Azul", (& cover) by Phil Barnes, Kayak Session magazine, Fall 2011.
Río Santo Domingo: kayak video Hotel Charlie-No Big Names 4, 2006.
Ríos Santo Domingo and Agua Azul. Expedition Earth--Rivers of the Maya adventure video, 1993.
Ríos Jataté, Lacantún, and Usumacinta: Sacred Monkey River: A Canoe Trip with the Gods, a nonfiction novel by Christopher Shaw, 2000. Nice read with interesting history and cultural background.
Ríos Lacanjá and Usumacinta: River of the Sacred Monkey, book by Dimitar Krustev, 1970.
Río La Venta: Rio La Venta; Tesoro de Chiapas, book by Badino Giovanni, Belotti Alvise, Bernabei Tullio, De Vivo Antonio, Domenici Davide, Giulivo Italo, 1999.
Belize River Challenge: "Surviving the La Ruta Maya", Paddler magazine, January 2001.
Ríos Macal, Cave Branch, and Moho: "12 Top Jungle Rivers", Paddler magazine, January 1999.
Río Swasey: "6 Stellar Winter Paddling Jems", Paddler magazine, November 2002.