This paper is the third of a series (Trevese et al. 1992, Paper I, Cat. <J/A+AS/94/327>, Flin et al. 1995, Cat. <J/A+AS/110/313>, Paper II, presenting F band photometry, from digitized 48-inch Palomar plates, of the galaxies brighter than m_3_+3 in a clusters. For each galaxy, absolute coordinates, magnitude, size, ellipticity and orientation are given. For each cluster we provide finding charts and contour maps of the galaxy surface density. In the present paper we analyze 15 new clusters and provide the absolute alpha and delta coordinates of the galaxies of 8 Abell clusters, studied in pap. I, which were published with relative coordinates only. In the electronic version, the tables of the 8 clusters of pap. I are written in the same format of papers II and III.