Here are some other authors I found:
"Choosing the best way of life" and "Is this life all there is?" - Reinhard Lengtat
"Happiness, how to find it" - Gene Smalley
"Let your name be sanctified" and "Life everlasting in freedom of the sons of God" and "The approaching peace of a thousand years" and "The new world" - Fred Franz
"Life does have a purpose" (one of my favourites at the time) - Edward Dunlap
"Making your family life happy" - Colin Quackenbusch