InterVarsity Press is one publisher who is sensitive to this important, and little talked about ministry. Billy Graham recently said the church prepared him to die, but did not prepare him well for aging.
Three new books by IVP can help us wisely address the unique challenges of aging. I have carefully read the first two, but only perused the third.
Whether you are getting older (whatever number you think that is!) or minister to “older folk,” these books provide sage advice:
http://www.amazon.com/Green-Leaves-Later-Years-Spiritual/dp/0830835652
http://www.amazon.com/Third-Life-Preparing-Your-Future/dp/0830837965
http://www.amazon.com/Vision-Aging-Church-Renewing-Ministry/dp/0830839488