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[Postcard from Henry A. Castle to M. S. King, December 4, 1902]

Letter from Henry Castle, US Postal Service auditor to M. S. King, postmaster of Splendora, Texas, informing him of the results of a September 30, 1902 audit.
Date: December 4, 1902
Creator: Castle, Henry A.
Object Type: Postcard
System: The Portal to Texas History
Rotary Engine. (open access)

Rotary Engine.

Patent for an improvement in rotary engines, specifically in engines where the piston is operated by direct and expansive force of steam.
Date: December 16, 1902
Creator: Carothers, Samuel Eugene
Object Type: Patent
System: The Portal to Texas History