Many sheets show handwritten annotations.
Auctioneer Andrew Grigg said the collection, which goes under the hammer on November 14 and has an estimate of $1000, was a "very unique opportunity:" to the right collector, school or institution.
"It is amazing that so much has been retained from her earliest pieces right through," Grigg said.
"The fact that she has thumbed through these, named many, written notes, added tags, folded corners ... [it] makes this collection very special. Part of her is associated with this music."
Major, crowned New Zealand Entertainer of the Year in 1992, said when she retired that her time would now be spent teaching at Waikato University and travelling overseas visiting top music institutions.