P.Jarrett - Pioneer Aircraft: Early Aviation Before 1914 /Putnam/

Impatiently applying power before the basic problems of controlled flight had been tackled, Herring built this diminutive and marginally powered biplane with a 3-5hp engine driving tandem pusher and tractor propellers. Tested in October 1897, it was barely able to fly, but its creator was satisfied and planned a more powerful successor.