Title	Mason Canning Jar
Subject	Daily Life Agriculture Canning and preserving Glassware
Place	Ohio
Description	This is blue glass Mason canning jar with a flip top. Mason jars were named for their inventor, John L. Mason of New York, and were manufactured by many different companies. The imprint on this jar reads, "Mason's/ Patent/ Nov 30th/ 1858." During World War II, conserving garden produce for later consumption became a vital activity to support the war effort. Canning and drying food was essential to increasing the food supply on the home front, for troops abroad, and for hungry citizens of Allied nations. The canning process prevented fruits and vegetables from spoiling. By removing oxygen from jars holding produce, undesirable bacteria would not be able to grow. Good vacuums created in canning jars formed tight seals that keep liquid in and air out.
Date of Original	1900 - 1950 circa
Source	Historical object(s) or artifact(s); H 83732
Format	picture; objects
Submitting Institution	Ohio Historical Society
Rights	Online access is provided for research purposes only. For rights and reproduction requests or more information, go to http://www.ohiohistory.org/images/information
Type	StillImage
File Name	Om3330_4692218_003.tif
Image Height	2620
Image Width	1524
File Size	318.1 KB
Date created	2009-01-09

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Mason Canning Jar