Frank Lloyd Wright's: Larkin Building Myth and Fact - Company Administration Building for Larkin - FLLW Archive Drawing Number 0403.068: Floor Plan (p. 77, fig. 76)

Drawing Citation

Drawing 068 - Second floor plan, also showing annex locker plans
Company Administration Building for Larkin (is cited in)
Frank Lloyd Wright's: Larkin Building Myth and Fact (published in)