Ready for summer to take off? Then launch in fun with Paper Airplane Contest. Design your own model or use one of the cool designs for The World Record Paper Airplane Book (Workman, $15.95) . Authentic notebook paper provided. The Wright Brothers might have gotten their start this way. Prizes for the plane-builders whose flying machines soar the farthest, kids up to 12 years old. Bal Harbour Beach Camp welcome!

In the late 1880s, Frank Lenz of Pittsburgh, a renowned high-wheel racer and long-distance tourist, dreamed of cycling around the world. In the spring of 1892 he quit his accounting job and gamely set out west to cover twenty thousand miles over three continents as a correspondent for Outing magazine. Two years later, after having survived countless near disasters and unimaginable hardships, he approached Europe for the final leg. He never made it. His mysterious disappearance in eastern Turkey sparked an international outcry and compelled Outing to send William Sachtleben, another larger-than-life cyclist, on Lenz’s trail. Bringing to light a wealth of information, David Herlihy’s gripping narrative captures the soaring joys and constant dangers accompanying the bicycle adventurer in the days before paved roads and automobiles. The Lost Cyclist (Houghton Mifflin Harcourt, $26) culminates with Sachtleben’s heroic effort to bring Lenz’s accused murderers to justice, even as troubled Turkey teetered on the edge of collapse.