Ellen White was a firm believer in the power of united prayer. She often prayed with others and encouraged God's people to unite in prayer for His blessing. "Jesus promised a special blessing on united prayer" she stated. (Signs of the Times, August 14, 1884 Par. 11).
Ellen White on United Prayer - An extensive compilation of Ellen White's writings on united prayer.
The Power of Corporate Prayer - An interactive worksheet full of Ellen White's writings on united prayer. Includes practical application questions to help you act on what you learn.