TD does have 4 ATMs in Southern Ontario that do dispense US$ cash. These can be convenient after-hours if you need cash late at night or during a holiday, or want to avoid bank lineups. I assume you can withdraw from your Canadian dollar TD account with their usual commissions. I would also think that non-TD customers could use them, at TD's regular commissions and ATM fees.

TD ATMs that give out US$ Cash:

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