Here’s a quote from one of our executive suit-wearing, brief-totin’, cigar-smokin’ honchos:

“We do not do sheet music. That is covered by publishers, not us. So you can check on the records to see if a publisher is listed. Or you could try your local store that sells sheet music & they may be able to help out (I am sure they have catalogs of that stuff, like there are record catalogs). Lyrics – maybe something on the web site or in the records themselves.”

I’d add the following: Fan web sites are more likely to contain lyrics, but they might not be the lyrics that the band had in mind. Tab is harder to come by, naturally. Sound it out, pal. Train your ear. You don’t get to be a good guitar player by following tab. And if you need Nirvana lyrics/tab for weddings or a bar mitzvahs or something, then all
I can do is pity you and laugh at your ancestors.