# Citation Guide ## Guide to Citing Objects in the Harvard Plate Stacks Collection This is a guide to building citations for archival material in the Harvard Plate Stacks Collection, which is based on the Chicago Manual of Style. This formatting is not required when citing Plate Stacks material and users may apply whichever style guide is chosen for other resources in your research. Much of the material in the Plate Stacks collection that fall outside the scope of the astronomical glass plate photographs and Project PHaEDRA are being inventoried, cataloged, and archived for the first time. Therefore, a researcher may find a mix of available information about an object. In cases where an object identifier is unavailable, an item description along with a box or folder number is particularly important. Open all sections Close all sections ### Repository Information expand\_more **Repository Name:** Harvard Plate Stacks **Repository Location:** Center for Astrophysics | Harvard & Smithsonian, Cambridge, Massachusetts ### Citing Glass Plate Photographs expand\_more ### Citation Format Plate series & number \[five digits, using leading zeros if needed\]. Item description \[optional for glass plate photographs with a plate ID\]. Telescope, observatory, geographical location where photograph was taken \[if known, elements are optional\], date. Repository name. Repository location. ### Example Minimum Citation Plate B02312. February 6-7, 1888. Harvard Plate Stacks. Center for Astrophysics | Harvard & Smithsonian, Cambridge, Mass. ### Example Expanded Citation Plate B02312. Glass plate photograph used by Williamina Fleming in her discovery of the Horsehead Nebula. 8-in Bache doublet Voigtlander, reworked by Clark, Harvard College Observatory, Cambridge, Massachusetts, February 6-7, 1888. Harvard Plate Stacks. Center for Astrophysics | Harvard & Smithsonian, Cambridge, Mass. ### Citing PHaEDRA Notebooks expand\_more Please include the following metadata points when citing materials from Project PHaEDRA. Omit field if not available: - First Author’s last name, first name, middle initial. - Title of work - Publication Date or Start Year (YYYY) - Page number or range - \[Unique identifier\] - Phaedra number preferred, ADS Bibcode or KG number acceptable - Repository and location - Collection - Project PHaEDRA. Harvard College Observatory observations, logs, instrument readings, and calculations. - Format (JPEG/TIFF, PDF, Transcript) omit if print manuscript - URL or DOI if available - Date accessed (for digital materials) (Month DD, YYYY) ### Citation Format Last name, First name Middle initial. *Title*. Date, pg. \[Identifier\]. Repository. Location. Collection. Format, URL (accessed Month DD, YYYY). ### Example Citations #### Citing pages from a digitized volume with a Phaedra number identifier: Cannon, Annie J. *Annie Cannon Notebooks*. 1915, pg. 52-55. \[phaedra2210\]. Harvard Plate Stacks. Center for Astrophysics | Harvard & Smithsonian, Cambridge, Mass. Project PHAEDRA. Harvard College Observatory observations, logs, instrument readings, and calculations. PDF, (accessed August 16, 2018). #### Citing pages from a print volume with a KG Number: Bond, George P. *Transit Circle.* 1849, pg. 99-103. \[KG11365.2\]. Harvard Plate Stacks. Center for Astrophysics | Harvard & Smithsonian, Cambridge, Mass. Project PHAEDRA. Harvard College Observatory observations, logs, instrument readings, and calculations. ### Logbooks, Print Photographs, & Archival Materials expand\_more ### Citation Format *Item description/title, dates*. Collection name \[in brackets if the collection is unprocessed and the collection name is created by the researcher\]. Object identifier/Item/Folder#. Repository name. Repository location. ### Example Citations *Harvard Standard Regions D. 1h -15 degrees.* \[Contact prints\]. Box 2 Folder 2. Harvard Plate Stacks. Center for Astrophysics | Harvard & Smithsonian, Cambridge, Mass. *Williamina Fleming with Women Astronomical Computers at the Harvard College Observatory, 1891.* \[Print photographs\]. HCO-PHO-078.001. Harvard Plate Stacks. Center for Astrophysics | Harvard & Smithsonian, Cambridge, Mass. *Bache Telescope, Bache Plates 3301-4442, Book 18. May 9, 1889 - October 14, 1889.* \[Observation logbooks\]. B8. Harvard Plate Stacks. Center for Astrophysics | Harvard & Smithsonian, Cambridge, Mass. ### Artwork expand\_more ### Citation Format First-name Last-name, *Title*, date, medium, dimensions with units, Repository, Repository City: Accession No. © Copyright Holder if not Harvard ### Example Citation Anthony van Dyck, *Saint Sebastian Tended by an Angel*, about 1630-1632, oil on panel, 41 x 30.5 cm, The J. Paul Getty Museum, Los Angeles: 85.PB.31. © The Getty Trust ### Elements of the Citation expand\_more ### Repository name Harvard Plate Stacks ### Repository location Center for Astrophysics | Harvard & Smithsonian, Cambridge, Mass. ### Plate series & number Plates are cataloged by plate series and plate number. The plate series corresponds to the [telescope](https://platestacks.cfa.harvard.edu/telescopes) that was used to take the image. ### Item description & Unique Identifiers In a citation for a glass plate photograph, the item description is optional and could include details about the subject of the photograph (Andromeda Galaxy, stellar spectra, etc.), whether the photograph has annotations and who made the annotations, an observer/photographer, or the kind of astronomical work being done using the plate. If the object you are citing does not have a unique identifier, be as detailed as possible and include a box/folder location when available. ### Telescope Each series typically represents a single [telescope](https://platestacks.cfa.harvard.edu/telescopes) although some series, notably the "mb" series, consists of data from multiple telescopes. Telescopes were occasionally moved to other observatories depending on observational goals. ### Observatory The Harvard College Observatory’s collection of glass plate photographs come from a network of [observatories](https://platestacks.cfa.harvard.edu/observatories) which provided full coverage of both celestial hemispheres. #### Style Guides for Primary Sources Library of Congress’ getting started with primary sources [ Chicago Style arrow\_circle\_right ](https://www.loc.gov/programs/teachers/getting-started-with-primary-sources/citing/chicago/) [ MLA Style arrow\_circle\_right ](https://www.loc.gov/programs/teachers/getting-started-with-primary-sources/citing/mla/)