Pair of identical photographs of a star cluster by Dr. A.A. Common taken using dry plates with a 36-inch reflecting telescope with silver-on-glass mirror from his home in Ealing, West London. Photographs of a star cluster 1885
Clusters in Perseus, E.S. Holden and J. M. Schaeberle, Lick Observatory, 33-inch refractor, exposure , 1h, 201/2 m Clusters in Perseus 1912
One of two identical photographs of a star cluster by Dr. A.A. Common taken using dry plates with a 36-inch reflecting telescope with silver-on-glass mirror from his home in Ealing, West London. Photograph of a star cluster 1885
