Missions to the heathen / by L.C. Barnes.

http://www.archive.org/details/missionstoheathe00barnrich

Two thousand years of missions before Carey, based upon and embodying many of the earliest extant accounts.

http://www.archive.org/details/twothousandyears014145mbp

Addresses of Rev. Drs. Park, Post, & Bacon : at the anniversary of the American Congregational Union, May, 1854.

http://www.archive.org/details/addressesofrevdr00parkuoft

Frontiers of the Christian world mission since 1938; essays in honor of Kenneth Scott Latourette. Edited by Wilbur C. Harr.

http://www.archive.org/details/frontiersofthech013243mbp

History of the Catholic missions among the Indian tribes of the United States, 1529-1854 / by John Gilmary Shea.

http://www.archive.org/details/historyofcatholi00sheaiala

The Franciscan missions of California. Illustrated with photos. by Karl Obert.

http://www.archive.org/details/franciscanmissio027190mbp