An American teenager made a fantastic discovery while rummaging through her dad’s old books. Maggie Poukkula, 19, posted a series of never-before-seen pictures of Nirvana on Twitter and Instagram. She came across the rare pics while flipping through a copy of her father’s Kurt Cobain biography.

The photos are apparently from the grunge band’s very first gig, which took place in Raymond, Washington in March 1987. When asked on twitter about the pictures, Maggie seemed rather clueless replying:  “I’m not sure. I have to ask my dad”. Her father, Tony Poukkula “went to high school with Kurt and played with him before he got big”.

The caption reads: “Pictures of my dad and Kurt Cobain playing together back in the day.”