I just saw this on Craigs...never attended myself, just posting:
http://losangeles.craigslist.org/wst/mcy/4930287695.html
Vintage Motorcycle Swap-Meet, Bike Show and Racing.
20th Annual Vintage Motorcycle Event
AHRMA (American Historic Racing Motorcycle Association)
Vintage Road Race and Motorcycle Show / Swap Meet
Location @ Willow Springs Race Way, Rosamond CA
Date April 24-26
Schedule 4/24 Fri All Day Practice day
4/25 Sat AHRMA Road Racing all day
Motorcycle Show
Swap Meet
4/26 Sun AHRMA Road Racing all day
Bike show and Swap meet
No Entry fee for Bike show and Swap Meet
No reservation need
Any questions
Corsa Website http://www.corsamotoclassica.com
Racing entry show contact info AHRMA
Track information: show contact info Willow Spring Race Way
Vender and Swap meet : show contact info garagecompany.com
AHRMA : dev.ahrma.org
Willow Spring Raceway: http://www.willowspringsraceway.com
Garage Company: http://www.garagecompany.com
Willow springs Raceway
http://maps.yahoo.com/#q=3500+75th+St+W%2C+Rosamond%2C+CA++93560-7179&conf=1&start=1&lat=34.87720010119928&lon=-118.2359790802002&zoom=15&mvt=m&trf=0
DIRECTIONS FROM LOS ANGELES / ORANGE COUNTY AREAS:
I-5 North to Highway 14 North - past Palmdale and Lancaster, CA to Rosamond, CA. Take the Rosamond Blvd. exit in Rosamond, and go West approx. 6 miles on Rosamond Blvd. to the WSIR main track entrance at 3500 75th Street West.