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  2. ROYAL OBSERVATORY EDINBURGH COMMUNICATIONS
  3. DUNSINK OBSERVATORY PUBLICATIONS COMMUNICATIONS OF THE DUBLIN INSTITUTE FOR AD
  4. Contributions from the Perkins Observatory, Ohio Wesleyan University and Ohio State University
  5. Villanova University Observatory contributions
  6. Contributions from the Observatory of Columbia University
  7. Contributions from the Princeton University Observatory
  8. Publications of the Allegheny Observatory of the University of Pittsburgh
  9. Transactions of the Astronomical Observatory of Yale University
  10. Contributions of the Observatory of New Mexico State University