(1970). "The Nearby Poor Cluster Collinder 399". Pub. of the Astronomical Society of the Pacific 82 (487), p. 640-652 Skiff, Brian (January, 1998). "Brocchi's Cluster Revealed". Sky and Telescope, p. 65-67 External links Brocchi's Cluster, Collinder 399 - SEDS Collinder 399: The Coat Hanger - LRGB CCD image Asterisms (astronomy) Vulpecula 64 64