Here is a sample page from the book, Lee Lawrie’s Prairie Deco: History in Stone at the Nebraska State Capitol, 4th Edition.

In it, we see the clay models for the Pioneer Panel and an earlier design of the cornice.

Bas-relief sculpture depicting figures on horseback, including a Native American guide, part of Lee Lawrie's maquette for the Pioneer Panel. Features ornate decorative elements above and below the scene. Text notes differences between the original design and final version. Courtesy of Nebraska State Historical Society.
Ornate architectural frieze with carved animal skulls and floral motifs
Decorative panel depicting pioneers with a Conestoga wagon, oxen, and family; includes symbolic elements like a buffalo skull and rising sun, titled "The Spirit of the Pioneers."