Fiftieth Anniversary of the Battle of Gettysburg : report of the Pennsylvania Commission, presented to His Excellency, John K. Tener, Governor of Pennsylvania, for transmittal to the General Assembly
History of the Seventeenth Regiment, Pennsylvania Volunteer Cavalry, or One hundred and sixty-second in the line of Pennsylvania volunteer regiments, war to suppress the rebellion, 1861-1865
compiled from records of the rebellion, official reports, recollections, reminiscences, incidents, diaries and company rosters ; with an appendix by H. P. Moyer.
Compiled from records of the rebellion, official reports, recollections, reminiscences, incidents, diaries and company rosters, with an appendix, by H. P. Moyer.
"Knowledge of elevations is critical to surveyors, engineers, coastal managers, developers, and those who make resource or land-use management decisions. NOAAs National Geodetic Survey (NGS) provides a great deal of the accurate elevation data needed by these groups to do their work successfully...The most accurate elevation data are collected through a process called SPIRIT LEVELING, which is performed with an instrument that is a combination of a telescope and a spirit level vial. Called a level, the instrument is used to read values from a set of specially constructed and marked rods. Leveling involves determining differences in elevation between survey points following a leap frog approach. Building off of known elevations and carrying elevations forward from point to point with a level and rods, surveyors construct a level line." [from the text]
