Yeti

Dracopedia Bestiary: An Artist's Guide     Any original/official source

The Monsters Know What They're Doing     Dungeons And Dragons original/official source

Angry Golem (web)     D&D 5e original/official source

Pathfinder 1e Bestiary 1     Pathfinder original/official source

Pathfinder 2e Bestiary 1     Pathfinder original/official source

Tome Of Horrors Complete     Pathfinder original/official source

Mythic Monster Manual v1     Pathfinder original/official source

Mystery Monsters Revisited     Pathfinder original/official source

All Sorts Of Critters (web)     Pathfinder original/official source

Monster Manual     D&D 5e original/official source

Monster Monday (web)     D&D 5e original/official source

Monster Ecology Anthology     D&D 5e (no source link)

Monster Manual 3     D&D 4e (no source link)

Scruffy Grognard's Monstrous Manual     D&D 2e (no source link)

Hacklopedia Of Beasts     Hackmaster original/official source

Fantasy Age Bestiary     Fantasy Age original/official source