[ Cambridge: Astronomical Observatory of Harvard College, 1915 ]. First edition. This article is dated 1915 and was published that year but is often misdated because it was later reissued featuring a title-page dated 1916. With two zincographed plates. Some dust-soiling to front wrapper and small open tear at spine, not affecting text. Stitches at spine loosened. Plates and final blank are detached but present. Some predation to lower corner at fore-edge. Small open tear to final blank. A good copy of this uncommon work by a member of the Harvard Computers. Printed self-wrappers, sewn, unbound as issued and complete with final blank that is often missing. Quarto. pp. 127-160. Item #16781
The present work compiles data that Harvard Computers member Mary Fowler gathered from her analysis of photographs of the moon. Fowler specialized in astrophotography, which is now much less common for gathering scientific data but was a major advance in the field of astronomy during the early-to-mid twentieth century. An earlier publication of hers in Popular Astronomy used astrophotographs taken at Harvard between 1907 and 1911 to determine the orbit of the spectroscopic binary U Saggitae and infer even more data about the star from as far back as 1887, almost fifteen years before the star was officially documented.
We could not find much information on Mary Fowler in the sources available to us. She was a member of the Harvard Computers alongside important woman astronomers like Anne J. Cannon, Antonia Maury, Williamina Fleming, Florence Cushman, and Henrietta Swan Leavitt.