The mission as a frontier institution in the Spanish american colonies, by Herbert E. Bolton.

http://www.archive.org/details/missionasfrontie00boltrich

The Spanish pioneers and the California missions.

http://www.archive.org/details/spanishpioneersa009682mbp

A proposal for the better supplying of churches in our foreign plantations, and for converting the savage Americans to Christianity, by a college to be erected in the Summer Islands, otherwise called the Isles of Bermuda.

http://www.archive.org/details/proposalforbette00berkrich