clusters currently accessible:

• Alpha Persei
  Translations of original Heckmann et al. 1956,1958 papers are available as postscript files here .
  Postscript versions of the APX I. and APX II. papers may be found here .
  Finding charts for faint candidates AP267-AP297 (1994 AJ 107, 1422) are here .
  
• Coma
• Hyades
• Praesepe
• Pleiades
• IC 2391
• IC 2602
• IC 4665
• NGC 6475
• NGC 2281