UNITED STATES - PHILADELPHIA. "Birds Eye View. CENTENNIAL BUILDINGS." 1876. Color lithograph. Nice proof on cream veiln, representing a view of the 1876 world exhibition, the first one held in the United States. Margins (irregularly trimmed on the right side). 64 x 48.7 cm (sheet). Condition B (some freckles and slight traces of dampness; small marginal accidents; a tear at the right edge, skillfully restored, mostly visible on the reverse).