The mid to late 1980's were productive years as Mary Lou completed her studies at Utah State University for her Master of Fine Arts degree. Here are some paintings dated 1984: 

Artwork dated 1985: 

Works dated 1986 and 1987: 

Here are some works dated 1988: 

These artworks are dated in 1989:

Toward the end of the 1980's Mary Lou began to produce a great deal of artwork.  Not all of it was dated, but the following works are thought to be from this period: