Houston Aerial Transp’t Co. 1925

Maybe it’s Transparent or Transplant. I’m going with Transplat.
Oh wait…

[It was known as] C.C. Cannan Field since 1918 and as an informal flying field and race track before that. In 1925 the field was purchased by Vince Hays for his Houston Aerial Transport Company. It was on this field that Shorty Walker and Guy Hahn made and flew their airplanes and aircraft engines. [Source]

[Top image found here, 1923 C.C. Cannan Field article found here, 1923 Detroit Free Press ad here.]