Manuscripts Division
William L. Clements Library
University of Michigan

Finding aid for
Jacob Frantz, Meteorological Observations, 1834-1855

Duane Norman Diedrich Collection

Finding aid created by
Erin Platte and Meg Hixon, April 2012

Summary Information
Title: Jacob Frantz, Meteorological Observations
Creator: Frantz, Jacob
Inclusive dates: 1834-1855
Extent: 1 volume
Pennsylvania resident Jacob Frantz compiled this volume of daily meteorological readings and related information between 1835 and 1855. An introduction also discusses weather patterns prior to the volume's commencement, as well as three major floods of Pequea Creek in Pennsylvania.
Language: The material is in English
Repository: William L. Clements Library, University of Michigan
909 S. University Ave.
The University of Michigan
Ann Arbor, MI 48109-1190
Phone: 734-764-2347
Web Site:

Access and Use
Acquisition Information:

1980. M-1924.

Access Restrictions:

The collection is open for research.


Copyright status is unknown

Processing Information:

Cataloging funded by the National Historical Publications and Records Commission (NHPRC). This collection has been processed according to minimal processing procedures and may be revised, expanded, or updated in the future.

Preferred Citation:

Jacob Frantz, Meteorological Observations, Duane Norman Diedrich Collection, William L. Clements Library, The University of Michigan


Jacob Frantz, an amateur meteorologist, lived in Pennsylvania between 1835 and 1855 and kept a record of weather patterns in a journal purchased from Reuben Chambers of Lancaster County, Pennsylvania. Frantz was also concerned with the prices of several crops, including corn, wheat, oats, and clover.

Collection Scope and Content Note

This 243-page volume, entitled "Range of Thermometer from 1835 to 1855," contains 241 pages of daily and monthly meteorological observations compiled by Pennsylvania resident Jacob Frantz between February 1, 1835, and February 28, 1855, as well as 2 additional pages of notes. The first two pages note the occurrence of floods in Pequea, Pennsylvania, on July 20, 1818, February 21, 1822, and January 26, 1839; general remarks on the weather during the winter of 1831; a brief record of a watch Frantz purchased from a man from Philadelphia in 1855; and Frantz's comments on the weather of May 12, 1834, and January 1835. The remaining 241 pages contain charts of daily meteorological observations. Each page covers an entire month of general observations on the weather in the morning and evening (February 1835-June 1835) or at noon (July 1835-February 1855), as well as high and low temperatures for each day and monthly averages. Frantz also recorded the phases of the moon after March 1835. For each month, Frantz composed a brief summary of the weather and its effect on local crops, most frequently flour, wheat, corn, oats, and clover seed. After July 1841, he often documented the prices of some of these goods as well.

Subject Terms

    • Clover.
    • Corn--Prices.
    • Floods--Pennsylvania.
    • Flour--Prices.
    • Meteorology--Observations.
    • Oats--Prices.
    • Pennsylvania--Weather.
    • Pequea (Pa. : Township)
    • Weather.
    • Wheat--Prices.
    Genre Terms:
    • Weather diaries.
    Contents List
    Container / Location Title
    Volume   1  
    Jacob Frantz Meteorological Observations,  1835-1855 [series]