Is there anyway to get a passport for my child without their father's notarized statement?

I'm planning on taking my two kids to Canada to visit my boyfriend's family in a few months. Their dad and I are not civil so when asked by his parents

Source: http://www.us-passport-service-guide.com/is-there-anyway-to-get-a-passport-for-my-child-without-their-fathers-notarized-statement.html

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