Ross when you an the boy are sandin on the parts , I know it will be hot under the dust mask but sure the little fella keeps it on !
remeber you are dealin with OLD paint , an yes it has lead in it . one thing to remeber for all is watch cutting or welding were that old paint will burn, the fumes are worse than the dust for ya .
Had an Uncle that ended up with a severe case of lead poisin while torchin apart an old bridge he was hired to dismantle .
Better safe than sorry !