Amongst other warbirds over the past year, however, they have worked on a Piper L-4H Grasshopper ... and fuel valve linkages. The L-4 is, of course, a Piper J-3 Cub after modest modification ...

But for our money, the Piper L4 Grasshopper should join that list. While Mustangs and Thunderbolts protected them from enemy fighters, Grasshoppers, based on the civilian Piper Cub, surveyed ...

The article was about Charles Carpenter, an L-4 pilot who became known as “Bazooka Charlie” for his exploits against German tanks. The Grasshopper—a Piper Cub as a civilian—was flown ...