Curious about this, I did a search. In 1904-1908, field goals were worth 4 points:Fishhead said:
http://www.funtrivia.com/quizzes/sports/ncaa_football/history_of_college_football.html
In particular:
Points Scoring . Scoring changes in the early twentieth century also helped popularize the game by increasing the value of touchdowns. When the first true football scoring system was devised in 1883 (replacing customary scoring procedures in which one point usually was awarded for advancing the ball across the goal in any fashion), kicking was emphasized. Field goals counted 5 points while touchdowns and conversions each counted 4. In 1884 the total for a safety was increased from 1 to 2 points, still in existence today. In 1897 the value of a TD was raised to 5 points with a successful conversion worth an additional 1 point. The field goal remained at 5 points until 1904, when it was reduced to 4 points. In 1909 it was further lowered to its modern 3-point value. The touchdown was given its modern 6-point value in 1912. No further point modifications were made until 1958, when teams were given the option of running or passing the ball across the goal line for 2 points after a TD, while a successful kicked conversion remained worth 1 point. A 1988 rule gave the defensive team 2 points for returning a blocked kick or an intercepted pass to the opponent's end zone during a conversion attempt. In 1992 this was extended to include a fumble return from any spot outside the end zone.
