Pathfinder 1e Bestiary 1     Pathfinder original/official source
Tome Of Horrors Complete     Pathfinder (no source link)
AD&D Monster Manual     AD&D 1e (no source link)
Dragonlance Bestiary     SAGA (no source link)
Hacklopedia Of Beasts     Hackmaster original/official source
Adventures Dark And Deep     Adventures Dark And Deep (no source link)