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The Hinkley collection is comprised of an account book and exercise book owned by members of the Hinkley family of Georgetown, Maine, in the mid-18th and early 19th centuries. The materials pertain to John Hinkley's finances, Samuel P. Hinkley's finances and education, and religious poetry.

The Hinkley collection is comprised of an account book and exercise book owned by members of the Hinkley family of Georgetown, Maine, in the mid-18th and early 19th centuries. John Hinkley kept 125 pages of accounts from 1755-1779, Samuel P. Hinkley kept 3 pages of accounts from 1789-1805, and Samuel P. Hinkley recorded 56 pages of information about mathematics and navigational principles. The account book also has 8 pages of religious poetry.

The first 125 pages of John Hinkley's Account Book concern the period between June 1755 and May 1779, though most accounts are dated between 1755 and 1765. His double-entry records pertain to his purchases of chocolate, sugar, corn, meal, rum, molasses, and other foodstuffs, and some reflect his interest in a sawmill. Several aspects of the mill's business are covered, such as providing boards and hauling timber. John Hinkley frequently traded with other members of the Hinkley family, including Josiah Hinkley and Samuel Hinkley. The accounts are followed by 8 pages of religious poetry, with one poem attributed to Betsey Hinkley, and 3 pages of financial accounts that Samuel P. Hinkley sporadically recorded between December 1789 and June 1805.

Samuel P. Hinkley's Exercise Book, dated December 18, 1837, contains 56 pages of nautical navigational problems and exercises. Topics include plane sailing, traverse sailing, parallel sailing, middle latitude sailing, and Mercator sailing, as well as the method of ascertaining latitude by making observations. Hinkley recorded several case studies and accompanying exercises for each sailing method, and the book contains the mathematical calculations used to solve each problem. Some problems, particularly those in the traverse sailing section, are accompanied by tables. The last several pages are copied entries from an unnamed ship's log, originally recorded during a journey between Boston and Madeira in March and April 1824 and during an unspecified voyage in January 1824.

The Joshua Benjamin journal contains notes and navigational logs on the various crews and voyages of the Brigantine Sarah, Brigantine Young Henry, Ship Lufilania, Brigantine Dolphin, Sloop Tryall, Brigantine Sea Flower, Sloop Experiment, Sloop Endeavor, Sloop Abigail, Brigantine Willam & Mary, Brigantine Union, Ship Samuell, Ship John and Cranwell, and the Ship Welcome, all sailing between 1713 and 1734.

The journal has 303 total pages, including the small pages bound together with the volume. Of these, approximately 258 are devoted to ships' logs. The book contains 60 pencil and ink coastal profiles.

The Joshua Benjamin journal contains notes on the various crews of the Brigantine Sarah and Brigantine Young Henry, as well as navigational logs and notes for various voyages of these ships as well as for the Ship Lufilania, Brigantine Dolphin, Sloop Tryall, Brigantine Sea Flower, Sloop Experiment, Sloop Endeavor, Sloop Abigail, Brigantine Willam & Mary, Brigantine Union, ship Samuell, Ship John and Cranwell, and the Ship Welcome, between 1713-1734. These voyages typically begin or end in Boston, bringing cargo to and from various ports along the Eastern Seaboard, Caribbean, and London.

The volume opens with the following inscription:

Joshua Benjamin Book[:] taken on board the Hardie Brilhae a french Ship of About 400 Tuns 32 guns Mounted x175 men in the year 1710[.] I then belonging to Her Majesty Queen Anne[']s Service in Her Ship the Kent of 70 Guns x 440 men[.]

However, none of the book's entries document the voyages of these ships. The first few pages consist of charts for the crew of the Brigantine Sarah and Young Henry with notes on crew names and positions, their wages, and time served on the ship for that voyage. After these entries is a description of a religious service at the Cathedral of San Salvador in Oviedo, Spain, accompanied by an inventory of holy relics housed there (page 9). The inventory claims 21 relics from various saints and religious figures, including one of the 30 pieces of silver received by Judas, 8 thorns from the crown Jesus wore at his crucifixion, and clothes worn by Jesus.

The next set of entries consists of the logs of the various voyages of Benjamin. He keeps track of the ships'; daily longitude and latitude positions, records the day's wind, weather, and sea conditions, and makes brief notes of daily events (setting off, docking, repairs, meeting other ships and sailors, exchanging goods, etc.). In general, the descriptions provide general information on the experiences of eighteenth-century seamen and speak to the ways in which they handled challenges at sea.

Occasionally, Benjamin describes encounters with other ships, which indicate that the crew felt keenly that the waters were dangerous. For example, on December 27, 1733, he mentions that they spotted two sails giving chase. "We feeling they were Enemies prepared to receive them by fitting the vessels for close fight" (p.141). The ships passed without incident. In one of the longer entries of the journal, Benjamin describes the unfortunate fate of the Brigantine Sarah, which on November 1, 1730, struck a rock that severely damaged the ship five leagues from Bermuda. Eventually, all crew abandoned ship and took refuge on a nearby Island. They were rescued by a passing sloop within 4 days and taken to South Carolina.

Many of the entries include rough pencil sketches of coastal profiles, indicating the basic vertical outline of approaching land. In addition to these profiles is a pen drawing of several fish (p.26) and a map of Martha's Vineyard (p.47). This hand-drawn and well labeled map of Martha's Vineyard is one of the earliest known charts of this passage.

See the "Detailed Box and Folder Listing" section for a complete document summary with voyage and illustration listed with their corresponding page numbers.

The Naghel exercise book, entitled Cahier de navigation, is a mathematical workbook on the art of navigation. The volume once belonged to Captain Francis Naghel, and includes documents and correspondence related to two of his descendants.

The Naghel exercise book (162 pages), titled Cahier de navigation, is a mathematical workbook on the art of navigation. The volume once belonged to Captain Francis Naghel, and includes documents and correspondence related to two of his descendants.

The navigational instructions comprise 143 pages of the volume. Individual sections often pertain to a rule with related examples and mathematical problems that often require fairly complex solutions. The volume covers specific topics such as plotting navigational courses, determining one's position, and using nautical instruments to establish direction and location. Many of the examples show practical applications and are illustrated by geometric figures or drawings of related nautical tools, and some also contain relevant charts.

• Compass (p. 47)
• An oblique sphere showing signs of the zodiac, with a picture of a small rowboat in the lower left corner (p. 73)
• Navigational problem illustrated by a half-globe and two sailing ships (p. 127)

The final 19 pages consist of pasted-in documents pertaining to Naghel and two of his descendants. These are a document certifying Naghel's American citizenship, dated June 12, 1806; a letter to Naghel's wife from her brother, Emanuel West (October 21, 1825); and documents that relate to Edward Q. Naghel, a dentist from New Albany, Indiana, and to Charles E. Naghel, a Marine commended for his work with the 1930 census in Alaska. The volume is bound in vellum.