
r.: Study for the Tall Flower; v.: Design for a Wall Decoration date from 1890/1895.

r.: Study for the Tall Flower, Freer Gallery of Art

v.: Design for a Wall Decoration, Freer Gallery of Art
They are fully catalogued in MacDonald 1995 (cat. rais.) [more] (cat. no. 1089) dated 'c. 1886'.

r.: Study for the Tall Flower, Freer Gallery of Art

v.: Design for a Wall Decoration, Freer Gallery of Art

Blue and Silver: Forget-me-not, Memorial Art Gallery, Rochester
The drawing on the verso looks as if it is a design for curtains or a wall, but it could equally be a study for a painting.
The nude on the recto has not been identified. She appears also in Blue and Silver: Forget-me-not m1090.

r.: Study for the Tall Flower, Freer Gallery of Art

Blue and Silver: Forget-me-not, Memorial Art Gallery, Rochester
r.: Study for the Tall Flower; v.: Design for a Wall Decoration m1089 and Blue and Silver: Forget-me-not m1090 are closely connected although it is by no means clear if one is a study for the other.
The Freer Gallery of Art label, quoted on the website asserts:
'Although titled Study, there is no evidence that Whistler painted a more finished version of this figure titled The Tall Flower. The verso of this sketch is decorative floral design for a wall that seems to be divided into three sections and illustrates Whistler's interest in Rococo revival interior design.' 1
See technical details in Whistler in Watercolour, Freer|Sackler, Washington, 2019, website.
By the terms of Freer's bequest, this work cannot be lent to another venue.
1: Freer Gallery of Art website, 2019.