High spatial resolution observations are presented of the compact outf
lows associated with the young protostars TMC-1 (IRAS 04381 + 2540) an
d TMC-1A (IRAS 04365 + 2535) in Taurus. Emission in CO(1 - 0) imaged w
ith the Owens Valley Millimeter Array shows the outflow lobes to be co
nical close to the star. Analysis of the outflow dynamics indicates th
at these objects are low-luminosity versions of the energetic outflows
more commonly observed. Near-infrared images at H and K bands show a
close correspondence between reflection nebulosity and the location of
high-velocity gas and suggest the outflow cavity is evacuated, as do
position-velocity diagrams of the CO(2 - 1). Comparison of the J = 1 -
0 transition with emission in the 2 - 1 line indicates that the excit
ation temperature in the high-velocity gas is higher than the surround
ing Taurus cloud. We place limits on the inclination of both objects b
y comparing the data with theoretical outflow models and conclude that
i similar to 40 degrees - 70 degrees for both objects. The deprojecte
d opening angles of the outflow cones are then in the range 30 degrees
- 40 degrees. None of the current outflow models satisfactorily expla
ins the results for TMC-1 and TMC-1A, which are among the youngest cla
ss I sources in Taurus. We find their outflow structure shares many si
milarities with the more obscured and possibly younger class 0 objects
, B335 and L1448-C. The main difference is the lower mechanical lumino
sities of the TMC-1 and TMC-1A outflows, reflecting a factor of 3 - 4
smaller linear extent and velocity and a factor of 10 - 20 lower mass
than the L1448-C molecular jet source. Taken together, the four protos
tars share the common properties of (1) conical outflow lobes close to
the star, (2) evacuated outflow cavities, and (3) relatively wide 30
degrees - 45 degrees opening angles. A successful theory of young stel
lar outflows must be able to explain these characteristics.