The Webber & Spaulding drawings of the William Wrigley Jr. castle on Mount Ada spans 1 linear foot and dates from circa 1928.
The collection is composed of one box containing 16 architectural drawings, all of which appear to be reproductions. Drawings
include: elevations, floor plans (including alternative floor plans), plot plan, and sections.
The firm Webber & Spaulding, founded circa 1928, was based in Los Angeles. Composed of Walter I. Webber and Sumner M. Spaulding,
the firm primarily designed homes in southern California. The exact date the firm dissolved is unknown.