On July 4, 1907, The Chicago Tribune used a cartoon drawing to remind local folks to use caution when celebrating the holiday with fireworks and other explosives. (The image below is from The Chicago Tribune, 4 July 1907, p. 1 and it was accessed through Footnote.com.)
Unfortunately, the advice came too late for Mrs. Hart and her son. Her death certificate tells us that she died of "Organic Heart Disease" but apparently there's more to the story than that. (Death certificate image from FamilySearch's Illinois, Cook County Deaths, 1878-1922)
The Chicago Tribune reported that she "fell dead on her doorstep from heart disease when son and playmates exploded giant firecracker." (The Chicago Tribune, 4 Jul 1907, p. 1, col. 3 accessed through Footnote.com)
Have a safe and happy Fourth of July everyone!