This album has so many different releases since it was first released on CD in the early '90s (ask my wife, I've got them all) that it's tough to be able get all the different info together without duplication.
That said, some of this info will be wrong, some of it will have been updated or changed over time, since more information may have come to light.
Anyway, that's my little disclaimer for you.
Below are the Liner Notes for Pet Sounds Box Set, including the 'little green booklet.' This one is massive.
There are a couple
of websites with great Liner Notes already available. So I've linked to
those sites. These Liner Notes are specifically for the Stereo release
of Pet Sounds (Capitol 72435-21241-2-1).