Dennis Pagen is the most prolific author of hang gliding magazine articles and books, aimed at beginner pilots to experts and covering everything from design to flying techniques and weather. He was US national champion in 1978.
The links here are in chronological order.
Luff in the time of cholera (primarily about the luffing dive) for Dennis’ serious injury in 1975
Eaglet, designed by Dennis, in Flying squad, a short history of the east coast U.S. hang glider manufacturer Sky Sports
Sirocco II, designed partly by Dennis, also in Flying squad
Calculus for some words by Dennis about the use of computers in generating hang glider airfoils in the mid-late 1970s, also in Flying squad
High aspect in Hang gliding 1977 for an image of Dennis launching in a Phoenix 8
Anything can happen in the next half hour in Mid-day lightning in Vermont, a review of the Francis Freedland documentary film 1978 Pico Peak International Hang Gliding Meet for a screenshot of Dennis collecting a check at the end of the competition
Engineering in Hang gliding 1978 and 1979 part 2 for a photo of Dennis with George Worthington and Tom Peghiny at Chattanooga in October 1978 and an action photo of Dennis on final approach in a Sirocco
Reynolds’ number in Hang gliding 1990 to 1993 for an image of Dennis flying a Moyes XS at the 4th annual glide ratio contest at Morningside Flight Park
Ability, also in Hang gliding 1990 to 1993, for an image derived from a photo taken by Dennis