The unofficial flag of the Vice President of the United States, used on two (known) occasions, one in 1915 and one in 1919 when Vice President Thomas Marshall was representing President Wilson.  The design, which was decided upon by Secretary of the Navy Josephus Daniels and Assistant Secretary of the Navy Franklin D. Roosevelt, was essentially the same as the President's flag of the time (Navy version), except with a white background.  The dimensions were supposed to be the same as the President's flag, which for size #1 was 10.2 by 16 feet (used here), and size #6 was 3.6 by 5.13 feet There is no known order or regulation which made this flag official; the first official Vice President's flag came in 1936.
The flagmaking order specified for the colors:[1]


FIELD: White
EAGLE: Brown bunting, feathers outlines in white worsted.
EAGLE'S TALONS &amp; BEAK: Yellow bunting worked with black bunting and black worsted.
SHIELD: Red, white, and blue bunting.
HALO: White muslin stars planted on field of light blue bunting, outlined with rays of yellow worsted.
RIBBON: Yellow bunting outlined in black bunting on #1 and black worsted on #6 size.
LEAVES: Green bunting.
ARROWS: Yellow bunting outlined with black worsted.


Another contemporary description said:[2]

 The flag of the Vice-President is white. The eagle is brown with feathers outlined in white. The talons and beak are yellow, worked with black worsted. The shield is blue in chief, with vertical pales white and red, below.  In the halo or "glory" on this flag, the stars are white, placed on a field of light blue, outlined with rays of yellow worsted.  The white ground of the flag prevents the definite dermarkation of the white cloud which should surround the "glory."  This part of the crest, i. e. the halo, is outlined with yellow worsted, so that practically almost the same effect is produced as that on the President's flag
Version of File:US Presidential Flag Navy 1899.svg, with the colors changed.  SVG Great Seal in turn taken from File:US-OfficeOfManagementAndBudget-Seal.svg, a U.S. Government work
U.S. Government