We have imaged with milliarcsecond resolution at 5 GHz 374 strong flat-spec
trum radio sources north of declination -44 degrees using the VLBA in 1996
June. The source sample was compiled from the source list for the VLBI Spac
e Observatory Programme (VSOP) Survey Program. About 250 of the sources obs
erved with the VLBA had correlated flux densities greater than or equal to0
.3 Jy on the longest VLBA baseline and these sources are currently being ob
served with VSOP at 5 GHz. This paper presents the results from the VLBA pr
elaunch observations: the correlated flux density dependence with u-v dista
nce; the contour display of the images; the model fit parameters for each r
adio component; and improved positions for 62 sources. Comparisons and exte
nsive cross-referencing with other major VLBI surveys are also given.