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      Early surveyors, like William E. Logan, used Rochon micrometer telescopes and targets (disk on a calibrated pole) to measure distance. Each microscope had a different calibration and therefore a different range. The instruments were calibrated against a distance measured with a surveyors chain (also known as Gunter’s chain). One chain …

      Early surveyors, like William E. Logan, used Rochon micrometer telescopes and targets (disk on a calibrated pole) to measure distance. Each microscope had a different calibration and therefore a different range. The instruments were calibrated against a distance measured with a surveyors chain (also known as Gunter’s chain). One chain …

      This item is a map of the United Counties of Leeds and Grenville, Canada West, as of 1861. It was based on surveys under the direction of H.F. Walling, and includes the townships of Leeds, Lansdowne, and Escott. This map includes some pictures, individual lot and concession numbers for each …

      This land indenture documents an agreement between Capron and the Great Western Railway Company. This is not the first agreement between Capron and the Great Western Railway company; an earlier document was signed in 1848. Capron built a highway and sold several lots near the strip of land he had …

      The Ontario County Courthouse was built from 1852-1854 on the west side of Centre Street between Ontario Street and Gilbert Streets. The architects were Frederic Cumberland and William Storm of Toronto. The extension at the north end was added in 1866. The building served as a courthouse from 1854-1964. In …

      Whitby Grammar School was built in 1846 at 315 Colborne Street West on the south side between King and Centre Streets. A modern addition was put on the front of the building in 1872-1873 at which point the school became known as Whitby Collegiate Institute. The school was demolished in …