The Rocky Mountains, Lander's Peak1863Free · sharp to 12×7 in
Canadian Rockies (Lake Louise)ca. 1889Free · sharp to 12×8 in
Merced River, Yosemite Valley1866Free · sharp to 12×9 in
Mountain Scene1880–90Free · sharp to 12×8 in
Nevada Falls, Yosemite1872 or 1873Free · sharp to 9×12 in
Sea Coveca. 1880–90Free · sharp to 12×9 in
Sketchbook of Columbus Subjects: Caravels, Figures, Heraldry, and Accessoriesca. 1891Free · sharp to 8×6 in
Study of Rocks and Trees by a LakeFree · sharp to 6×5 in
Study of a Treeca. 1864Free · sharp to 5×6 in
Sunrise on the Matterhornafter 1875Free · sharp to 9×12 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 isSea Cove, at 3,811 × 2,802 pixels: enough for a 12.7 × 9.3 in print at 300 dpi, or 25.4 × 18.7 in at poster sharpness.
The Met flags one of these as a collection highlight: The Rocky Mountains, Lander's Peak.
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.