Search

The Records and Observational Data subseries consists of various sets of weather-related records and observational data recorded at the Observatory. Sets of anemometer (wind pressure), barograph (atmospheric pressure), and thermograph (temperature) records exist from the 1880s to the early 1900s. A set of logbooks that record various observations at the Observatory and data recorded from the Meridian Circle telescope are also part of this series. Other observation notebooks can be found in the University of Michigan Observatory record group in the Detroit Observatory subseries and the Observation charts and notebooks series.