Keywords: erle p. halliburton erlephalliburton oklahoma history outdoor Circa 1930 picture of Erle P. Halliburton and his Ford Tri-Motor airplane. There were 199 Ford Tri-Motor planes produced from 1926 to 1933. "Cementer" can be seen painted on the rear of the fuselage. Taken in Duncan, OK. See my Oklahoma History Gallery www.flickr.com/photos/reddirtpics/galleries/7215763223262... Circa 1930 picture of Erle P. Halliburton and his Ford Tri-Motor airplane. There were 199 Ford Tri-Motor planes produced from 1926 to 1933. "Cementer" can be seen painted on the rear of the fuselage. Taken in Duncan, OK. See my Oklahoma History Gallery www.flickr.com/photos/reddirtpics/galleries/7215763223262... |