[4] Concerned that the flooding would kill the park's old-growth pine forest, Gibbs ordered the company to open the dam.

[4] When Gibbs and the local sheriff brought a warrant to open the dam's lift, the company's lumber boss threatened to shoot "anyone who puts a hand on these levers.

[1] After his threat was proved futile, the lumber boss ordered the gates opened, and he and another worker were brought to jail.

[1] Soon afterwards, rumors spread that Gibbs had been armed during the confrontation; the Minneapolis Journal ran a headline on April 24, 1903 reading "She had nerve, and a big gun.

[7] The Mary Gibbs Mississippi Headwaters Center and Interpretive Plaza, featuring exhibits exploring the history, geography, geology, and natural environment of the area, was dedicated in 2005.