Works dated 1990:

Works dated 1991:

Works dated 1992: 

Works from 1993: 

Works dated 1994: 

Works from the year 1995:

Several works dated 1996:

Works from 1997:

Artwork dated 1998:

Works from 1999:

Mary Lou painted prolifically in the late 1980's and 1990's. The artworks below are thought to have been painted during the 1990's, though not dated by her signature: