Catalogue of the mean declination of 981 stars
between twelve and twenty-six hours of right ascension, and thirty degrees and sixty degrees of north declination, for January 1, 1875 /
Prepared under the direction of Bvt. Brig. Gen'l C.B. Comstock, U.S.A., major corps of engineers in charge of U.S. Lake Survey, by Professor T. H. Safford, director of Dearborn Observatory.

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