Wheeler Survey field notebook no. 72: observations and comparisons for latitudes; astronomical records Image Read more about Wheeler Survey field notebook no. 72: observations and comparisons for latitudes; astronomical records
Wheeler Survey field notebook no. 142: computations, topographical meanders and data Image Read more about Wheeler Survey field notebook no. 142: computations, topographical meanders and data
Wheeler Survey field notebook: triangulation; topographical records Image Read more about Wheeler Survey field notebook: triangulation; topographical records
Wheeler Survey field notebook no. 2: aneroid readings; reconnaissance of 1869 Image Read more about Wheeler Survey field notebook no. 2: aneroid readings; reconnaissance of 1869
Wheeler Survey field notebook: computations of latitudes and departures, of topographical meanders Image Read more about Wheeler Survey field notebook: computations of latitudes and departures, of topographical meanders
Wheeler Survey field notebook no. 40: observations for time Image Read more about Wheeler Survey field notebook no. 40: observations for time
Wheeler Survey field notebook no. 39: observations for time Image Read more about Wheeler Survey field notebook no. 39: observations for time
Wheeler Survey field notebook no. 35: meteorological records; comparisons of instruments at Washington, D.C. Image Read more about Wheeler Survey field notebook no. 35: meteorological records; comparisons of instruments at Washington, D.C.
Wheeler Survey field notebook no. 8: latitude by Polaris Image Read more about Wheeler Survey field notebook no. 8: latitude by Polaris
Wheeler Survey field notebook no. 7: observations for latitude Image Read more about Wheeler Survey field notebook no. 7: observations for latitude