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We have obtained Spitzer Space Telescope MIPS (Multiband Imaging Photometer for Spitzer) observations of 39A-throughM-typedwarfs,withestimatedagesbetween12and600Myr;IRACobservationsforasubsetof11stars; and follow-up CSO SHARC II350  m observationsfor a subsetof two stars.Noneofthe objects observedwithIRAC possess infrared excesses at 3.6-8.0  m; however, seven objects observed with MIPS possess 24 and/or 70  m excesses. Four objects ( Phe, HD 92945, HD 119124, and AU Mic), with estimated ages 12-200 Myr, possess strong70  mexcesses,  100%largerthantheirpredictedphotospheres,andno24  mexcesses,suggestingthatthe dust grains in these systems are cold. One object (HD 112429) possesses moderate 24 and 70  m excesses with a colortemperature,Tgr ¼ 100K.Twoobjects( 1LibandHD177724)possesssuchstrong24  mexcessesthattheir 12, 24, and 70  m fluxes cannot be self-consistently modeled using a modified blackbody despite a 70  m excess >2 times greater than the photosphere around  1 Lib. The strong 24  m excesses may be the result of emission in

ASpitzerStudy of Dusty Disks around Nearby, Young Stars