. >> richard patterson is the director of the old barracks museum. >> we don't have a receipt from washington. if we had a paper trail that went back a century or more, when you have some items that are attributed to a particular person, particularly a famous person, that sort of adds to the level of documentation that you would like to have. it appears to be authentic to the period, and it's something that, quite plausibly, was carried by washington. >> mild-mannered barbara can't believe the museum, after all these years, is waffling on the wallet. >> i really am very sure that that's george washington's pocketbook. >> "plausibly" just doesn't cut it for her. washington biographer richard brookhiser understands. is it okay if we just believe it, or do we really need to know for sure? >> no, we want to know for sure. >> and we do know for sure, insists appraiser lori verderame. i ask her to make her case. >> the first thing we're gonna look for is age. i'm also gonna look for construction. the binding is just like what we would typically see. it's made the same way cambridge university would

. >> richard patterson is the director of the old barracks museum. >> we don't have a receipt from washingtonhad a paper trail that went back a century or more, when you have some items that are attributed to a particular person, particularly a famous person, that sort of adds to the level of documentation that you would like to have. it appears to be authentic to the period, and it's something that, quite plausibly, was carried by washington. >> mild-mannered barbara can't believe the museum, after all these years, is waffling on the wallet. >> i really am very sure that that's george washington's pocketbook. >> "plausibly" just doesn't cut it for her. washington biographer richard brookhiser understands. is it okay if we just believe it, or do we really need to know for sure? >> no, we want to know for sure. >> and we do know for sure, insists appraiser lori verderame. i ask her to make her case. >> the first thing we're gonna look for is age. i'm also gonna look for construction. the binding is just like what we would typically see. it's made the same way cambridge university would actuall

noted i was unhappy of the extension by north patterson he revealed to you he negotiated with richard patterson and had him pay for a the retrofitted of the property in return for his 1340r9 of the zashs and we're most effects at the abutting structure. >> what else he predicted the domino effect of the inrespectable properties to the north of 3636 webster street tare identical i know there is a member of the board a real estate agency that's the standard lot size for the marina and the majority of lots are that size i'll show the block and the two properties the subject property those two properties are identical in every way no reason if it evaporates was not granted they shouldn't expected it variance grant as well as this structure will be across the property line and talked about the wall that wall was requested by previous owner of 3636 webster here's the e-mail of todd requesting we build a wall to protect his wall it is not under the original plans and doing it to appease another owner this property is high maintenance and needing more we're skemz that the code be followed. >> thank you

noted i was unhappy of the extension by north patterson he revealed to you he negotiated with richard patterson and had him pay for a the retrofitted of the property in return for his 1340r9 of the zashs and we're most effects at the abutting structure. >> what else he predicted the domino effect of the inrespectable properties to the north of 3636 webster street tare identical i know there is a member of the board a real estate agency that's the standard lot size for the marina and the majority of lots are that size i'll show the block and the two properties the subject property those two properties are identical in every way no reason if it evaporates was not granted they shouldn't expected it variance grant as well as this structure will be across the property line and talked about the wall that wall was requested by previous owner of 3636 webster here's the e-mail of todd requesting we build a wall to protect his wall it is not under the original plans and doing it to appease another owner this property is high maintenance and needing more we're skemz that the code be followed. >> thank you

patterson, nbc news, santa clarita, california. >>> a new york man was freed this week after spending 20 years in prison for a crime he says he did not commit. "dateline nbc" has been following richard rosario's case for a newly-released digital documentary series called "conviction." kristen dahlgren has more tonight. >> reporter: with applause and smiles, richard rosario enjoyed his first moments of freedom, holding the hand of the wife who stood by him and hugging the children he left behind as babies. >> i thought i would never see my father. >> reporter: convicted of the 1996 bronx murder of a 17-year-old, rosario spent half his life in prison. >> i still don't understand what i'm doing in prison. i'm innocent. >> reporter: "dateline nbc" producer dan slepian first met rosario two years ago and has been investigating his story for a new web series, "conviction." >> what we're doing here is we're on our own journey. is he telling the truth? >> reporter: from the beginning rosario claimed he was in florida at the time the murder was conducted committed in new york. with 13 alibi witnesses to prove it, including his friend john torrez, now a sheriff's deputy. torrez testified at r