  An extensive redshift survey has been conducted on a sample of 15 nearby
(0.01 < z < 0.05) clusters of galaxies. A total number of 860 redshifts were
determined by fitting of emission--lines and/or cross-correlation techniques.
Of this sample, 735 galaxies are within 0.2--0.8 Mpc ($H_0$ = 50 km/s/Mpc) of
the center of clusters. Approximate morphological types are available for most
of the galaxies. A comparison of the present redshifts with published data
allows an extensive error analysis. The agreement is excellent with the most
modern data, showing a zero point error of 5 km/s and an overall consistency of
the measurements and their uncertainties. We estimate our redshifts to have
mean random errors around 30 km/s. A population analysis of the clusters will
be given in a forthcoming paper.
