The Smithsonian Institution is responsible for covering up the existence of giants, but did you know evidence exists proving this— in the Smithsonian's own annual reports?
We will begin with the 5th annual report which right away reveals large skeletons of high antiquity which crumble when exposed to air, found together with many copper items.
The authors described a skeleton as "unusually large", and gave a measurement of "something over 7 feet". Next in the same document we have a description of "very large" and no measurement. The general rule was the larger the skeleton, the less attention it received.
The refusal to measure skeleton's was likely the result of political pressure from the Smithsonian's tyrannical director, John Wesley Powell, who seemed compelled to accredit the downtrodden natives with the art of the mound-builders.
Everything but the skeletons were measured.
That we get even rough, modest estimates is likely due to the allowances of Cyrus Thomas (1825 -1910) who, though he was hired as a hatchet man by Powell, apparently did not possess the maniacal hubris necessary to completely erase the Tall Ones.