Many “Early Birds” were first airborne in what became known as the Popular Mechanics Glider. Do-it-yourself drawings were published by that magazine in April 1909, from a design by Carl Bates of Chicago. Hundreds of them were built.
The glider, properly registered with the FAA as N2579, was built in 1970 by Robert Mixon and his partner Gary Alfonzo of Miami, Florida. It had a wing span of 20 feet, with a total of 160 square feet of wing area. It made only two flights, both ending with the tail hitting the cliff from which it was launched and the second causing a severely sprained ankle.
All Aero 