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to Benjamin Silliman

Sends Silliman, chemistry professor at Yale, enclosed examples (not included) of his improvements in gum elastic. Claims that "the elastic articles will not loose their elastic quality by age or by use."

GLC02480.09

to George May Powell

He was unable to attend to completion of the May patent and pay the government fee as previously determined. He will now renew it as soon as possible.

GLC00687.129

[contract]

He grants Alexander Whillden a share in Powell's Cannon Rifle.

GLC00687.201

[Appointment of Joseph Jackson Coombs as an examiner-in-chief of the United States Patent Office]

Countersigned by Walton J. Smith, acting Secretary of the Interior. Impression stamped with The Department of the Interior seal.

GLC00782.14

Invitation for the President of the National Agricultural Convention

McCormick, inventor of the reaping machine, invites the President of the National Agriculture Convention to attend a demonstration of the machine. He indicates that the convention is assembled in Washington, D.C. Includes an initialed postscript...

GLC00974