The quarries of the Hummelstown Brownstone Company are listed on the National Register of Historic Places.

[2] Hummelstown brownstone pits were first opened by early German settlers in the late 18th Century.

[2] To bolster sales, The Walton family commissioned an advertising booklet by J. Horace McFarland around 1910 which listed almost 400 structures built of their stone.

[5] Two years later, with the onset of the Great Depression, the Hummelstown Brownstone Company was officially dissolved.

During its 36 year history the quarry produced approximately 4.3 million cubic yards of stone.