One can find plenty of information about gun shows on websites such as "Showmasters", "Cross Roads Gun Shows", "Gun Show Trader" or "East Man Gun Show".
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Knife shows are most of the time being shown with most Gun shows. One can find some information about knife shows online at Gun Show, Great Southern Gun Show, Blade Show, Mi Gun Shows, Gibraltar Trade and Gun Show Trader.
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The Blue Book of Gun Values can help. More current information as to what it might sell for can be found in online auctions. Local gun shops and gun shows can also be useful.
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You can find much good information online about guns on Youtube but you may also talk to gun store owners, gun owners, go to gun shows, or go to a shooting range and ask questions. Im sure the Colt website has a plethora of information on their firearms with exact specifications of each gun and every detail and they probably also mail out information and catalogs for free if you request it.
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