A 610.5 MHz survey of the sky between declinations +40 and +44 degrees. McLeod, J. M. ; Swenson, G. M., Jr. ; Yang, K. S. ; Dickel, J. R. Abstract Publication: The Astronomical Journal Pub Date: 1965 DOI: 10.1086/109815 Bibcode: 1965AJ.....70..756M