Bert Holtje founded James Peter Associates, Inc, in 1970. The firm served as an independent book producer and literary agency, and provided consulting, editorial, and promotional services until it was sold in 2000. JPA represented 87 authors of nonfiction books and placed over six hundred books with major US and world publishers. It also provided extensive direct marketing services to Prentice-Hall, McGraw-Hill and other book publishers. Bert Holtje is the author of 11 books published by major publishers under his own name and more than 20 others as the collaborator or ghostwriter. He has BS and MA degrees in psychology and marketing. His editorial interests include business, psychology, self-help, science, technology, history, and politics

Bert now provides consulting services to authors, agents and publishers which include ghostwriting, proposal development, manuscript development, and collaboration.