"Big Band" Era Autographed Photo Cards

I recently found these "Photo Cards" in my father's scrapbook. He & his pals would frequent this nightclub near their homes in Westfield, New Jersey on the week-ends. My dad was an amateur musician, and broadcast jounalist in the "Golden Days" of radio. This one was signed by Tommy Dorsey, and singer Connie Haines. I have another signed by trombonist Bobby Byrne. I have no idea of commercial worth, except these are a great piece of American history!