Book publishing is an exciting business--but it is also a sad one, especially when a book is put out of print. Used copies of most are still available at Amazon. Here are my own deceased works:  

 

The Very Real Ghost Book of Christina Rose. Boston: Houghton Mifflin, 1996. Dell paperback edition, 1998.

How to Make a Mummy Talk. Boston: Houghton Mifflin, 1995. Dell paperback edition, 1997.

How to Read Your Mother's Mind. Boston: Houghton Mifflin, 1994. Dell paperback edition, 1996.

Study Skills in Practice. Boston: Houghton Mifflin, 1993.

How to Travel Through Time. New York: Avon, 1993.

Ghost Hunters. New York: Avon, 1992.

How to Hunt Buried Treasure. Boston: Houghton Mifflin, 1992. Avon paperback edition, 1994.

How to Catch a Flying Saucer. Boston: Houghton Mifflin, 1991. Avon paperback edition, 1992.

How to Find a Ghost. Boston: Houghton Mifflin, 1988. Avon paperback edition, 1990.

Frogburger at Large. Germany.

Frog Eyes Loves Pig. New York: Harlequin, 1998.