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Music-Leaf Turner
Patent for a music leaf turner to turn the pages of sheet music for pianists. Illustrations included.
Date:
April 2, 1912
Creator:
Meier, Ernst
Object Type:
Patent
System:
The Portal to Texas History
Texas Hill Country Trail Region: Exploring the Mystique of Central Texas
Travel guide for the various cultural and historical sites along the Texas Hill Country Trail in Central Texas.
Date:
April 2010
Creator:
Texas Historical Commission
Object Type:
Pamphlet
System:
The Portal to Texas History
CAPCOG Connections, April 2013
Monthly newsletter of the Capital Area Council of Governments discussing news, upcoming events, and other information of relevance for regional planning in the Austin, Texas area.
Date:
April 2013
Creator:
Capital Area Council of Governments (Austin, Tex.)
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
CAPCOG Connections, April/May 2011
Monthly newsletter of the Capital Area Council of Governments discussing news , upcoming events, and other information of relevance for regional planning in the Austin, Texas area.
Date:
April 2011
Creator:
Capital Area Council of Governments (Austin, Tex.)
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Correlation of Gravity of the Coal Creek Serpentine Mass, Blanco and Gillespie Counties, Texas
Abstract: "Gravitational observations were made of the pre-Cambrian Coal Creek serpentine mass in Blanco and Gillespie Counties, Texas, the geology of which had been mapped previously. The observed gravitational anomalies indicate roughly the depth of the serpentine mass below which it may possibly grade into its parent peridotitic rock. Probable correlation between the gravitational map and the other geologic features of the area is indicated" (p. 151).
Date:
April 2, 1949
Creator:
Romberg, Frederick & Barnes, Virgil E. (Virgil Everett), 1903-1998
Object Type:
Report
System:
The Portal to Texas History
Well-Casing Grapple
Patent for a well-casing grapple, allowing a positive grip when lowering casing or pipe within a well, or withdrawing it therefrom, without the danger of slipping or accident.
Date:
April 30, 1918
Creator:
Artzt, Erich C.
Object Type:
Patent
System:
The Portal to Texas History