He subsequently returned to United Airlines as a flight instructor, until retiring to Penn Valley, California.
In 1995 Mr. Lufker purchased a 1931 open cockpit Bird biplane in Penn Valley, California.
Penn Valley, California, a census-designated place in Nevada County, California
Las Vegas Valley | William Penn | Death Valley | Silicon Valley | San Fernando Valley | Sean Penn | Squaw Valley, Placer County, California | Squaw Valley | Shenandoah Valley | Willamette Valley | Valley of the Kings | Tennessee Valley Authority | Happy Valley | San Joaquin Valley | Rio Grande Valley | Rift Valley Province | Hudson Valley | Central Valley | Death Valley National Park | Death Valley Days | Coachella Valley Music and Arts Festival | Valley Forge | Klang Valley | Imperial Valley | Green Valley | valley | The Big Valley | San Gabriel Valley | Penn Relays | Lehigh Valley Railroad |