  Previous studies of young stellar objects (YSOs) have uncovered a number of
associated parsec-scale optical outflows, the majority of which are driven by
low-mass, embedded Class I sources. Here we examine more evolved Classical T
Tauri stars (CTTSs), i.e. Class II sources, to determine whether these are also
capable of driving parsec-scale outflows. Five such sources are presented here
- CW Tau, DG Tau, DO Tau, HV Tau C and RW Aur, all of which show optical
evidence for outflows of the order of 1pc (24' at the distance of
Taurus-Auriga). These sources were previously known only to drive "micro-jets"
or small-scale outflows < 1' in length. A parsec-scale outflow from a less
evolved source (DG Tau B) which was noted in the course of this work is also
included here. Examination of the five newly discovered large-scale outflows
from CTTSs shows that they have comparable morphologies, apparent dynamical
timescales and degrees of collimation to those from less evolved sources. There
is also strong evidence that these outflows have blown out of their parent
molecular clouds. Finally we note that the "fossil record" provided by these
outflows suggests their sources could have undergone FU Orionis-type outbursts
in the past.
