Signed in plate, upper right: [Whistler's butterfly device] In pencil on tab, lower left center: [Whistler's butterfly device followed by] imp.
Stamp in blue, verso: Howard Mansfield [Lugt 1342] Stamp in black, verso: HW [Harris Whittemore; see Lugt 1342]
Inscribed in pencil, verso, center of sheet: WW Titled, lower center: Regent's Quadrant