mr. landau is released from prison, he will be prohibited from visiting museums, libraries, or any other documents are deposited. >> simon: one after effect of the landau case is that security is being tightened in many of these places. pat anderson is imposing new rules in the maryland historical society. >> anderson: our patrons are no longer allowed to wear jackets in the reading room. and it's unfortunate-- some of our older patrons, they get chilly, and we have to say "i'm sorry" and... so they can wear a shawl but they can't wear jackets, so... ( laughs ) >> simon: you're going to have to hand out blankets. >> anderson: well, exactly and hope that they don't have pockets in them. >> simon: yeah. and ms. anderson will not just be hoping. she'll be there on the front lines guarding our past. you are the custodians of more than these documents; you're sort of the custodians of american history. >> anderson: yes, we are. we're the stewards. we make sure it gets from one generation to the next. this is what survives of the american past. we never have all of it, which is what makes what