Callahan has been mentioned or cited more than a hundred times throughout all the RSS channels we monitor. Especially, the channel 'The Hockey Writers - Main' contains more than a dozen references to this person (or maybe different people with similar names) alone. As it’s displayed on the chart below, Callahan was highly popular in November, 2016.

? Person Mentions History Monthly Yearly
?Person Mentions History
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Diabetes Reducer Book Review

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Callahan related Persons

Callahan related channels