We have a place for Record Shop Bags in Music Memorabilia but I feel that 78s need their own pages on 45spaces just for record shop sleeves. I've got several to add but probably not the 10+ you need to start a 'Space'

On 78 World we also have a List by xiphophilos Record Store Sleeves listing 78s where someone has uploaded an image of a sleeve, but it would be better in the long term to have a Spaces list where you could search in meaningful ways for record stores