40 and 50 (Man and Woman Seated) (from Sketchbook)1854–55Free · sharp to 6×8 in
After Dinner (Possibly Ross Winans) (from Sketchbook)1854–55Free · sharp to 6×8 in
Arrangement in Black, No. 3: Sir Henry Irving as Philip II of Spain1876, reworked 1885Free · sharp to 6×13 in
Arrangement in Black: Girl Readingca. 1880–90Free · sharp to 9×12 in
Artist's Studio (from Sketchbook)1854–55Free · sharp to 6×8 in
Butterfly MonogramFree · sharp to 5×6 in
Cremorne Gardens, No. 2ca. 1870–80Free · sharp to 12×6 in
Edward Guthrie Kennedy1893–95Free · sharp to 4×8 in
Harmony in Yellow and Gold: The Gold Girl—Connie Gilchristca. 1876–77Free · sharp to 6×12 in
Note in Pink and Brownca. 1880Free · sharp to 7×12 inReading the board
Each card shows the largest print the Met's file makes at 300 dpi without cropping — that's the sharpness you'd want for something you'll stand close to. The biggest file in this set isArrangement in Black: Girl Reading, at 2,888 × 3,878 pixels: enough for a 9.6 × 12.9 in print at 300 dpi, or 19.3 × 25.9 in at poster sharpness.
Every page has a size chart against standard frames, the museum record, and the frame and light that make a print look like it cost more than it did. The file itself is free. It always was.