Gray, Elma E. Wilderness Christians: The Moravian Mission to the Delaware Indians. New York: Russell & Russell, 1973. 2nd Printing. ISBN: 0846217015.
Green cloth, 6 1/2 x 9 1/2 inches, xi., 354 clean pp., portion of front cover dark from old stain. Ex Bible college library with the usual markups; library label removed from spine. Good. Hardcover. 
First published in 1956 by Cornell University.
"This book is a backward glance into what was one of this continent's noblest enterprises - the Moravian mission to the Delaware Indians. These courageous missionaries began their work in Pennsylvania in the mid-eighteenth century, and they led the Delawares, dispossessed by the white man's advancing civilization, to Ohio, to Michigan, and finally to the Thames River in Canada, where they built the once-flourishing community of Fairfield." - from the Preface.