The Robert S. Benner collection of nautical charts consists of 22 nautical charts created in the late 17th century and mid-18th century. The majority of the nautical charts in the collection come from Francesco Maria Levanto's (1650-1718) Prima Parte dello Specchio del Mare, nel quale si Descrivono Tutti li Porti, Spiaggie, Baye, Isole, Scogli, e Seccagni del Mediterraneo, originally issued in 1663, with a later edition published in 1695. All of Francesco Maria Levanto's charts are numbered in the lower-right corner of each chart with descriptions in Italian. Levanto's charts map various Mediterranean ports, coasts, and islands. The collection also holds two nautical charts that are not part of the Francesco Maria Levanto set, which are unnumbered and captioned in English instead of Italian. The donor of the collection, Robert S. Benner, identified the two unnumbered charts as being from around the mid-18th century. One of the unnumbered charts shows the northwest coast of Ireland and the other shows "The Sea Coast of Languedoc Provence and Part of Italy; from Cape Dragon to Cape Delle Melle." Lastly, the collection includes a binder of photocopies of the charts compiled by Robert S. Benner and an SD memory card with digital image files of the charts.