While the original intent of the cornerstone was to align the rest of the building, often with astronomical precision, over time it became ceremonial. Set on the outside of the building, and usually on the corner, it might contain the name of the building, the year of construction, the builders, architect, etc. Sometimes there is a cavity where items such as newspapers or coins might be deposited as in a time capsule.
Cornerstones are typically found on public buildings, such as our Court House, and on churches, as “Jesus Christ himself being the cornerstone.” (Eph 2:20, RSV) Even keystones, as on the Sam Rayburn Library, may be considered as a cornerstone.
A drive around Bonham found the following cornerstones. They offer a variety of styles, placements and information. 
Kay Layton Sisk enjoys finding the little things that make life interesting. You may find her at www.kaysisk.com and follow on Facebook at kaylaytonsiskauthor.
