Did you know Tillman's Roadhouse used to be the site of the Texas Bowling Center? That the makeup company turned Mary Kay empire had its humble beginnings in the same area? Or that the Oak Cliff Broom Co. was once at the corner of Bishop Avenue and Seventh Street, and that its blind owner sent an oversized broom and mop to President Franklin Roosevelt to help him "sweep away the corruption" in the government — and got a thank-you letter in return? These little historical nuggets may be interesting to read, but they're even more fun when read aloud by an enthusiastic teenager who complements the text with funny sound effects and ragtime and jazz from the period. Corrie Coleman, a lifelong resident of Oak Cliff, began researching for the tour as a Girl Scout project and got so enthusiastic that the finished tour — which cites more than 50 sources — helped earned her a spot at the TAG Magnet School at the Yvonne A. Ewell Center.