Maier joined the Park Service as an administrator in 1933, where he became less personally involved with individual buildings and more involved in policy. Maier became an assistant regional director and was in a position to influence projects funded through the Park Service. In this way, Maier influenced the design of state park buildings by publishing pattern books based on his own work for use by the Civilian Conservation Corps in state park projects. The CCC buildings at Bastrop State Park in Texas, now a National Historic Landmark district, were designed during this period.