  Using the 3-telescope IOTA interferometer on Mt. Hopkins, we report results
from the first near-infrared (lambda=1.65 mu) closure-phase survey of Young
Stellar Objects (YSOs). These closure phases allow us to unambiguously detect
departures from centrosymmetry (i.e., skew) in the emission pattern from YSO
disks on the scale of ~4 milliarcseconds, expected from generic ``flared disk''
models. Six of fourteen targets showed small, yet statistically-significant,
non-zero closure phases, with largest values from the young binary system MWC
361-A and the (pre-main sequence?) Be star HD 45677. Our observations are quite
sensitive to the vertical structure of the inner disk and we confront the
predictions of the ``puffed-up inner wall'' models of Dullemond, Dominik, and
Natta (DDN). Our data support disks models with curved inner rims because the
expected emission appear symmetrically-distributed around the star over a wide
range of inclination angles. In contrast, our results are incompatible with the
models possessing vertical inner walls because they predict extreme skewness
(i.e., large closure phases) from the near-IR disk emission that is not seen in
our data. In addition, we also present the discovery of mysterious H-band
``halos'' (~5-10% of light on scales 0.01-0.50 arcsec) around a few objects, a
preliminary ``parametric imaging'' study for HD 45677, and the first
astrometric orbit for the young binary MWC 361-A.
