The 1936 design: Joseph Berry, J.M. Tindall, and the Art Deco gamble
The U-Drop Inn was conceived in 1935 by Shamrock oilman John Nunn, who envisioned a roadside business that would combine a filling station, a cafe, and a small retail space — a one-stop traveler complex along the brand-new Route 66 alignment that had been carrying east-west traffic across the Panhandle since 1926. Nunn partnered with R.C. Lewis to finance the building and hired Joseph Berry, an Amarillo architect, to design something that would stand out from the wooden-frame commercial buildings then typical of small Texas towns. The brief was open-ended; Nunn reportedly told Berry to make the building memorable enough that travelers would always stop in Shamrock to see it.
Berry delivered an Art Deco design at a scale and level of ornament almost unheard of for a Texas town of two thousand people. The building was clad in glazed terra cotta tile in pale cream and emerald green — colors chosen to evoke the Irish heritage of the town's founders — with vertical ribbed pylons, ornamental finials atop both towers, decorative cast concrete medallions at key transition points, and continuous neon tubing wrapping the cornice. The construction cost in 1936 dollars was approximately $23,000, a substantial sum for the time and place, and the building was finished and opened to the public in April 1936 with a grand-opening ceremony that drew several thousand spectators from across the Panhandle.
The cafe's name came from a community contest. Nunn offered a five-dollar prize for the best name for the new restaurant component, and the winning entry — submitted by an eleven-year-old Shamrock boy named John Wesley Mertz, according to local tradition — was simply 'U Drop Inn.' The name has been continuously displayed in neon on the building's facade for nearly ninety years, and despite numerous changes of ownership and even brief closures, the U-Drop Inn name and signage have remained constant since 1936.
