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This unattributed two-story, red brick store-front building with slender inset channels of buff brick does not adhere to Jules Leffland's familiar tripartite formula. Its use of opus spicatum decorative brickwork in the arch above second-floor windows and its divided center composition evoke the work of N. J. Clayton, although it is not likely to be his design. One- and two-story storefronts at 104, 110, 130, 134, and 138 S. Houston Street strongly reflect the defining characteristics of Leffland's commercial typologies. The Houston Street side of the square possesses two later twentieth-century interventions: the former Plaza Theater, a 1942 reconstruction by Ernest L. Shult of the Plaza Hotel at 116 S. Houston Street, and the former Worthing Insurance Agency Building (1962) by Herman A. Kelling of Houston and Raymond Davidson of Wharton at 148 S. Houston Street. The Worthing Building brought mid-twentieth-century modern architecture to Monterey Square.