40th Annual Spring Street Fair, March 19-21, 2010. 4th Avenue, between University & 9th. Apply at www.zapplication.org. Contact: Fourth Ave. Merchants Assoc., (520)624-5004 or (800)933-2477, (520)624-5933 fax. 329 E. 7th St., Tucson, AZ 85705. www.fourthavenue.org