Through a Great Door tells of the Lord's work as witnessed by Shelton in his ministry, which took him to Taiwan, the Pescadore Islands, Okinawa, and Viet Nam.

It takes an open door, a call, and a willing heart for a fruitful ministry to be born. These all came to a young man named Bob Shelton, whose ministry took him to Taiwan, the Pescadore Islands, Okinawa, and Viet Nam to minister to hundreds of thousands of Asians throughout the 1950s. Through a Great Door tells of the remarkable work of the Lord Shelton witnessed there and the grace he and his companions received to overcome every trial that accompanied them. Young and old will enjoy Shelton's vivid testimony that in any circumstance of life God is enough.