There are roughly 200 Ranger Bill episodes that I am aware of. The show numbers, titles, and first airing dates that I have were provided by Moody Audio. AKA titles are Ranger Bill Fan Club titling.
The following are the two openings used on the show. These half-hour stories that His Kids provides us each week were produced from the fall of 1954 until 1962. Opening #1 was used from 1954 until the fall of 1959. #2 was then used through 1962.
Opening #1 - "Ranger Bill, Warrior of the Woodland, struggling against extreme odds, traveling dangerous trails, fighting the many enemies of nature. This is the job of the guardian of the forest, Ranger Bill. Pouring rain, freezing cold, blistering heat, snows, floods, bears, rattlesnakes, mountain lions. Yes, all this in exchange for the satisfaction and pride of a job well done."
Opening #2 - "Ranger Bill, Warrior of the Woodland, struggling against extreme odds, traveling dangerous trails, showing rare courage in the face of disaster, in the air, on horseback, or in a screaming squad car. Ranger Bill, his mind alert, a ready smile, unswerving, loyal to his mission. And all this in exchange for the satisfaction and pride of a job well done."
(This opening also contains the sounds of an airplane motor, running horse hooves, and a police siren.)