So's

Of all the queer collections of humans outside of a crazy asylum, it seemed to me this sanitarium was the cup winner. […] When you're well enough off so's you don't have to fret about anything but your heft or your diseases you begin to get queer, I suppose.

"Has he been working?" / "Not so's you'd notice."

My father's at work right now. So's my mother.

My father's gone away on holiday. So's my mother.