http://www.calvertnews.info/c/505/calvert-county-maryland-md-police-fire-scanner-radio has been crawled 60 times going all the way back to March 14, 2007.

A crawl can be a duplicate of the last one. It happens about 25% of the time across 420,000,000 websites. FAQ
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Note

This calendar view maps the number of times http://www.calvertnews.info/c/505/calvert-county-maryland-md-police-fire-scanner-radio was crawled by the Wayback Machine, not how many times the site was actually updated. More info in the FAQ.