dale’s last major ceramic work, and the largest, weighing five tons and measuring twenty-five hundred square feet (25' x 10'), was the untitled mural, or screen as it was called at the time, created for the centennial concert hall in winnipeg in 1967. this was one of four artworks commissioned for the building’s interior, and dale was the only artist chosen who did not have close ties to manitoba. dale’s previous experience in commissions allowed her to traverse the multiple stages of submissions and negotiations, from the initial 1966 call for submissions from artists specifically chosen by the arts committee until the final work was installed in january 1968. the mural was divided into four main sections: three circular ones with figures representing the performing arts of dance, music and drama, and one horizontal that included all those who worked backstage as well as the audience. in designing and fabricating this mural in sections for easy transportation and handling, dale turned once again to bricks as her base unit form and material, still inspired by mayan textures and sectional building techniques. she cut the clay bricks at a variety of heights and cut and reformed wet clay to construct the architectural shapes around her sculptured figures, themselves formed by the expressionist gestures of cutting, gouging and pushing.