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"Labná, Structure 1, East Wing, south facade . . . detail, Room 59, upper level" (reconstruction drawing of facade of same room in photo at left and photo above).       
Scanned from George F. Andrews, Pyramids and Palace, Monsters and Masks; Vol. 1, Architecture of the Puuc Regions and the Northern Plains Area, 1995, p.75. Reproduced with permission of Labyrinthos, publishers.