referred to lyman draper, a sad character. as bob said, he went 50,000 miles, he did all this research, he collected -- >> on horseback. >> on horseback. all these notes. spent years and years and years so he would be able to write this magnum opus about one of the most remarkable characters in american history and he started writing and at a certain point developed writer's block and couldn't write anymore. and he died leaving his book unfinished. thankfully, his notes and interviews and everything are available to researchers and that was an enormous help to us. >> it was. sarah, it was a pile. i'm trying to think, it was 130,000 pages, something like that. it's at the wisconsin historical society. and you asked what our -- our system is, i guess is basically what you're asking, how do two people -- tom likes to say he writes one sentence, i write the next, he writes one sentence, i write the next. but what happened is we developed a very henry ford like assembly line. tom is -- you could send me into the library of congress