Each of these booklets represents the public notice of patents granted by Royal decree or those held as Provisional. Each is wrapped in original blue paper cover, printed at the Great Seal Patent Office, 25 Southampton Buildings, Holborn and printed by George E. Eyre and William Spottiswoode. A collection of rarely seen booklets that describe the intense work by inventors who were making incremental improvements in the globe and map making process. In many cases the patent application was made decades earlier.

1) A.D. 1858, 12th November - No. 2542. Specification of George Tomlinson Bousfield. Apparatus for Illustrating Conic Sections and the Lines of the Globe., 1859.
2) A.D. 1855 - No. 1445. Specification of Ignace Joseph Silbermann. Manufacture of Globes, & c. Mouldong globes.
3) A.D. 1855 - No. 541. Specification of Alexander Clark. Globes. Hollow glass globes with gores on the inside so they are protected.
4) A.D. 1721 - No. 432. Patent of John Harris, John Senex, and Henry Wilson. Globular Charts., 1857. Statement of invention generally known as "Harris, Senex, and Wilson's Patent."
5) A.D. 1775 - No. 1107. Specification of John Haywood and Thomas Jefferys. Globes. Making globes by casting in a concave mold. Application dated March 14, 1776.

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Condition: A

Contents fine. Blue covers mostly fine, but two with slight soiling.