There's a lot of these kind of t-shirts out there. Thinking it's a bold type of Helvetica, but looking for a free alternative on dafont.com or elsewhere. Thanks!

i moved your topic here, as it's not about identification (you already know it's helvetica), but more about finding some free alternative.

Alte Haas is the only free lookalike I think.

http://www.dafont.com/alte-haas-grotesk.font?text=Kent%26Stark

You have Windows so you have Arial.
Use it, it's very close Helvetica.