  We present observations of the star formation region NGC 7129 taken with the
Multiband Imaging Photometer for Spitzer (MIPS). A significant population of
sources, likely pre-main sequence members of the young stellar cluster, is
revealed outside the central photoionization region. Combining with Infrared
Array Camera (IRAC) and ground-based near-infrared images, we have obtained
colors and spectral energy distributions for some 60 objects. The [3.6]-[4.5]
vs. [8]-[24] color-color plane shows sources clustered at several different
loci, which roughly correspond to the archetypal evolutionary sequence Class 0,
I, II, and III. We obtain preliminary classifications for 36 objects, and find
significant numbers of both Class I and II objects. Most of the pre-main
sequence candidates are associated with the densest part of the molecular cloud
surrounding the photoionization region, indicating active star formation over a
broad area outside the central cluster. We discuss three Class II candidates
that exhibit evidence of inner disk clearing, which would be some of the
youngest known examples of a transition from accretion to optically thin
quiescent disks.
