WTB: Old Switchblade Knifes

Looking to buy old American Switchblade knifes working or not. Also looking for old memorabilia related to switchblades knifes displays, signs, cases, etc..... also looking for old lever spring American Knifes. Some of the brands are Schrade, FlyLock, Remington, Shur Snap, Edgemaster, Shapleigh, Kaybar, Case, Press Button, Aerial, Union, Imperial, Hammer, etc..... Anything that’s old and American made. Working or not. Basically interested in anything that has a button or lever and was made in the states. Some of these old knifes only have Pat. Dates on them and don’t say USA but will have the state etc... of manufacture. Thanks