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Waldo, Leonard, 1853-

 Person

Found in 13 Collections and/or Records:

Chronograph Readings, 1881 Digital

Item — Box: 77Identifier: KG11365-6, phaedra1838
Scope and Contents: This collection contains over 2500 logbooks and notebooks produced by the Harvard Computers and early Harvard astronomers.

Chronograph Record, 1880-05-27/1880-10-05 Digital

Item — Box: 11Identifier: KG11365-6, phaedra0436
Scope and Contents: This collection contains over 2500 logbooks and notebooks produced by the Harvard Computers and early Harvard astronomers.

Double Star measures, 1876 Digital

Item — Box: 48Identifier: KG11365-6, phaedra1176
Scope and Contents: This collection contains over 2500 logbooks and notebooks produced by the Harvard Computers and early Harvard astronomers.

Records of the Harvard College Observatory Time Service

Sub-Fonds Identifier: UAV 630.377
Overview: In 1872, under Director Joseph Winlock, the Harvard College Observatory established the world’s first public time service, which it provided as a commercial service until 1892. The Observatory sold its time service to railroads and businesses by sending hourly signals over Boston’s fire alarm system and distributing time across the region via Western Union telegraph lines; this work eventually resulted in the establishment of the country's first time zone. The Records of the Harvard College...

Level of East Transit, 1877 Digital

Item — Box: 75Identifier: KG11365-6, phaedra1800
Scope and Contents: This collection contains over 2500 logbooks and notebooks produced by the Harvard Computers and early Harvard astronomers.

[Observations] 1878, 1878-05-04/1878-06-30 Digital

Item — Box: 13Identifier: KG11365-6, phaedra0480
Scope and Contents: This collection contains over 2500 logbooks and notebooks produced by the Harvard Computers and early Harvard astronomers.

[Observations] c 1878, 1878-05/1878-06 Digital

Item — Box: 13Identifier: KG11365-6, phaedra0475
Scope and Contents: Book contains record of observations of the transit of Mercury, May 6, 1878.

Readings of Chronograph Sheets, 1879-02-15/1879-12-31 Digital

Item — Box: 77Identifier: KG11365-6, phaedra1839
Scope and Contents: This collection contains over 2500 logbooks and notebooks produced by the Harvard Computers and early Harvard astronomers.

Time Service and Russian Transit, 1877 Digital

Item — Box: 75Identifier: KG11365-6, phaedra1794
Scope and Contents: This collection contains over 2500 logbooks and notebooks produced by the Harvard Computers and early Harvard astronomers.

Time Service, Clock Comparison, 1881 Digital

Item — Box: 75Identifier: KG11365-6, phaedra1799
Scope and Contents: This collection contains over 2500 logbooks and notebooks produced by the Harvard Computers and early Harvard astronomers.