Erhardt Developmental Products
Videos and other Materials about Child Development and Children with Disabilities

NON-ACADEMIC PUBLICATIONS

Books

Erhardt, RJ (2009). A neighborhood park. Maplewood, MN: Erhardt Developmental Products. Click here for more information and how to order.

Erhardt, R. J. (November 29, 2005). Dinner plan made Christmas run smoothly. Woodbury Review, 25(48), 6.

Articles

Erhardt, R. J. (January, 2003). Devil’s dictionary. Mensagenda, 39(4), 20.

Erhardt, R. J. (November 29, 2005). Dinner plan made Christmas run smoothly. Woodbury Review, 25(48), 6.

Erhardt, R. J. (April, 2009). Dumb things people do: The Habitat chronicles. Mensagenda, 45(7), 10-11.

Erhardt, R. J. (July, 2009). Building family memories. Mensagenda, 45(10), 19.

Poetry

Erhardt, R. P. (December, 1999). Before the cold. Mensagenda, 36(3), 23.

Erhardt, R. P. (June, 2005). After the cold. Mensagenda, 41(9), 11.

Erhardt, RJ. (March, 2006). During the cold. Mensagenda, 42(6), 15.

Erhardt, RJ. (September, 2007). Way before the cold. Mensagenda, 43(12), 19.

Erhardt, RJ. (August, 2008). Windy shadows in the park. Mensagenda, 44(11), 23.

Erhardt, RJ. (September, 2008). Bird music in the park. Mensagenda, 44(12), 7.

Erhardt, RJ. (November, 2008). The New Path. Mensagenda, 45(2), 5.

Erhardt, RJ. (January, 2010). Trees and poems. Mensagenda, 46(4). 24.

Cover Art (photographs and illustrations)

Erhardt, RJ (December, 2000). Pine trees. Mensagenda, 37(3).

Erhardt, RJ (February, 2001). Valentines. Mensagenda, 37(5).

Erhardt, RJ (April, 2001). Computer quilt. Mensagenda, 37(7).

Erhardt, RJ (October, 2001). African mother and children. Mensagenda, 38(1).

Erhardt, RJ (November, 2002). Minnesota skyview. Mensagenda, 39(2).

Erhardt, RJ (February, 2003). Map for Mensa annual gathering. Mensagenda, 39(5).

Erhardt, RJ (October, 2003). Study of line and texture. Mensagenda, 40(1).

Erhardt, RJ (January, 2004). Moonrise over Pleasantview Park. Mensagenda, 40(4).

Erhardt, RJ (April, 2004). Eggs. Mensagenda, 40(7).

Erhardt, RJ (October, 2005). Leaves. Mensagenda, 42(1).

Erhardt, RJ (November, 2005). Stargazer. Mensagenda, 42(2).

Erhardt, RJ (December, 2005). Christmas stockings. Mensagenda, 42(3).

Erhardt, RJ (July, 2006). Bluebird. Mensagenda, 42(10).

Erhardt, RJ (July, 2008). Mrs. Peter Rabbit, Mensagenda, 44(10).

Erhardt, RJ (February, 2009). Obedience School, Mensagenda, 45(5).

Erhardt, RJ (August, 2009). SkyDuck, Mensagenda, 45(11).

Erhardt, RJ (November, 2009). November Contradiction, Mensagenda, 46(2).

Erhardt, RJ (January, 2010). Winter boughs droop with heavy snow, Mensagenda, 46(4).

Erhardt, RJ (July, 2010). Stargazer, Mensagenda, 46(10).

Erhardt, RJ (August, 2010). SquirrelBath, Mensagenda, 46(11).