I'm not sure what the proper or best way is but this is what I did when I brought Clover home.

Zeke can be a little aggressive but he's never shown it towards a pup so I didn't think there would be a problem. He was in the car with us when we picked her up and he just sniffed a bit from the back seat. We got home and I let him sniff her but kept an eye on them. He was actually unsure of her. Even when she jumped on him trying to play he seemed like he knew she was a baby and could get hurt so he sorta ignored her til she was a little bigger. I don't know if all dogs would react this way or if this is even the best way to do it. I never had a problem though. They get along great.

What if you hold Ryder and let Hank sniff him so you can control it if Hank is going to have a problem? I wouldn't leave them along together or anything any time soon.