Installing snow leopard on an early 2011 MacBook Pro 13"

https://discussions.apple.com/thread/4717307?answerId=20949526022#20949526022

Does anyone know if Joe Felice was successful regarding the method in the above thread? Do you know how I can contact Joe? Of course I can't choose "Reply"...

I bought an early 2011 MacBook Pro 13" from my gf, who is the original owner and only owner. We can't find the original install OS X discs that shipped with it. They were probably tossed in a fateful cleaning purge.

We signed her out and deauthorized iCloud/iTunes and followed all the "prepare your mac for sale" steps. I wiped it. I want to revert it back to the original state with the original 10.6.6 or .7 Snow Leopard OS X. We upgraded the OS X to El Capitan in 2017. I think we made a Time Machine back up to an external HD beforehand, but it's in her possession and I keep getting "oh hold on, gotta look for where I put that HD..."

I called Apple Care requesting to buy a copy of 10.6.6 or 10.6.7 Install DVD(s), and the lady was like homeboy say what, I never heard of such a proposterous yet totally reasonable solution that we used to do!

I also have a late 2007 iMac with 10.6.8 Snow Leopard OS X on a partition. I have the 10.6 Snow Leopard OS X retail disc. I downloaded many ~10.6.7 installers from Apple support (see attached screen shot).

What can I do? Should I call Apple Care again and try harder for those install discs? Can I try a mildly convoluted method using the resources in my possession? 10 years ain't all that ancient, and this shouldn't be so hard - I don't care the logic. I have expensive music production sound cards and software versions that took me forever to learn and only work with Snow Leopard OS X.