This collection of papers describes the established missions in the Rivers of Colorado and Gila (both in Arizona) and contains a selection of five documents that detail the amplification of communication in the west towards California and plans for expansion on more missions in the Rivers of Colorado and Gila.

A. Don Hugo Oconor writes a summary of the established missions and imprisonments throughout the Colorado and Gila Rivers In addition, he mentions ideas for expanding communication with New Mexico, from Sonora to Monterrey. The Pima and Apache peoples are mentioned as having been subjugated under Spanish colonial forces in New Mexico.

B. A document index on mission executions along the Colorado and Gila Rivers, as well as nearby prisons and communication operations spanning Sonora, Monterrey, and New Mexico.

C. Useful papers on communications with the new establishments along the Colorado and Gila rivers. A description of the Moqui Peoples and other territories. This paper was presented to the Viceroy, and it was later sent to court. The native nations that are mentioned are the Cocopah (Cocomaricopas), Akimiel O'odham (Pima), and Quechuan (Yuma).

D.  The Uprising of the Yumas. The letter was written on October 26, 1981, and mentions the disappearances of the bodies of four Frays: Juan Marcelo Diaz, Francisco Tomas Hermenegildo Garces, Juan Antonio Barreneche, and Jose Matias Moreno. 

E. An account of statistical data on deaths and captivities of Spaniards from the Comanche Revolt on August 15, 1820. 

F. 1 leaf in which explains the contents of each attached document and their usefulness for study and further research. It is also stated that although there was an original copy of one document, there is another one that was written more neatly and concisely for clarification. signed by Senor D. Melchor.