[1] After graduating, he spent "three to four years working in a basement perfecting the skill of making clay look like people" before launching his studio.

[7] Schubert's busts for the Hall of Famous Missourians include sculptures of plaintiff Dred Scott, Negro league baseball coach Buck O'Neil, science fiction author Robert A. Heinlein, country music singer Porter Wagoner and creator of the Missouri state flag Marie Oliver.

[11] Schubert's 2016 sculpture Sacred Heart of Jesus, created for Benedictine College, was modeled on the Shroud of Turin and depicts fourteen folds representing the Stations of the Cross.

[3] In response to a Confederate statue being removed from his city in 2017, Schubert offered to donate a replacement sculpture that would represent unity and uplift the community.

The statues were of local heroes Judge Isaac C. Parker, educator John Carnall, and Mother Superior Mary Teresa Farrell.