pl23_theb1843.jpg
Description
C. F. Ellingwood recording during leveling of White House.Level party of Howard Rappleye
Credit
C&GS; Season's Report Rappleye 1950-101
Display Date
1950
Location
Washington, D. C.
Category
Historic Coast & Geodetic Survey
Geodesy
Determining the Elevations - Leveling a Continent
Keywords
Geodesy
Leveling