The Sparks-Engleman Building at 605 and 607 Main Street in downtown Vancouver dates back to 1903. The building is noted to be the only remaining cast iron structure in Vancouver. The original storefront was provided by George L Mesker and Co. Architectural Ironworks of Evansville, Indiana. After its construction, the Sparks- Engleman building was featured on the cover of the 1904 Mesker catalogue.

The building was planned by two of Vancouver's visionary businessmen, Marshall Rowe Sparks and Christopher L. Engleman. The building's uniqueness begins with an unusual agreement by the two men to construct like structures side-by-side and combine the two with a common second story and designer storefront. The concept and ownership was as distinct as their professions (a barber and a hardware business owner), and prescient as their ingenuity. Eventually, part of the building became the now gone, Palace Theater. 

Listed in the Clark County Heritage Register in 2015

• Sparks Engleman Clark County Heritage Register nomination (PDF)