“Furthermore, the FBI ruled that The Anarchist Cookbook does not incite “forcible resistance to any law of the United States” and is therefore protected under the First Amendment. While much of the text was deemed to be inaccurate, the FBI concluded that the chapter on explosives “appears to be accurate in most respects”.”
“Furthermore, the FBI ruled that The Anarchist Cookbook does not incite “forcible resistance to any law of the United States” and is therefore protected under the First Amendment. While much of the text was deemed to be inaccurate, the FBI concluded that the chapter on explosives “appears to be accurate in most respects”.”
From https://en.m.wikipedia.org/wiki/The_Anarchist_Cookbook
As someone mentioned earlier though, the US army published its own book on improvised munitions that is supposedly much more accurate