Description:
2001-1-0029a-z are 26 sheets of pale grey cardstock onto which are glued photographs of Harvard College Observatory buildings, scientific instruments, and research stations (including that in Arequipa, Peru), celestial photographs taken with Harvard astrographs, and records of data analysis (much of it done by women "computers" employed at the Observatory). The cards were used to illustrate a talk about the Observatory and its research.
Topics include stellar spectroscopy, photometry, novae, binary stars, and variable stars. The images and graphs are captioned in ink in a cursive hand, perhaps by Williamina Fleming.
This particular card shows:
d. "Meteorograph on EL Misti. Records temperature, pressure, moisture, direction and velocity of wind for three months without winding." Black and white photograph, dry mounted, ca. 1890-1900. Penciled marking on reverse: "E 2902."