What are some good resources to find about about upcoming card shows?
 

In your experience, what are the best ways to find out about upcoming card shows in a particular region? I'm especially interested in those with substantial vintage/pre-war presence. I have often found out about shows after they have already happened...

Thank you in advance for any advice.
Matthew

Our friends at Oldcardboard have a good calendar. And theirs is the far right icon on the row of icons across the middle of the page.

https://oldcardboard.com/calendar.asp

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Thank you, Leon and Randy.