[Calculations for navigating in unidentified waters]

Component identifier:

Item 5

Content Summary:

Notes in pencil on blue paper. Shows Britannia watermark. Headed 'Thursday' and 'Friday' on recto. On sheet 20 x 32 cm.

Immediate source of acquisition:

Purchased by the National Library from Brighton Antique Prints and Maps in October 2018.

Names:

Brighton Antique Prints and Maps

Access and use