Vintage Concert Posters, Part 1 of 3

My dad showed me some more of his very cool vintage concert posters over the weekend. The first is for Jim Kweskin Jug Band, Electric Train, and Big Brother & the Holding Company at SF's Avalon Ballroom.

The second is the Blues Project, the Sons of Adam, and the Quicksilver Messenger Service, also at the SF Avalon. Note that this was a Family Dog Presents concert ("The Laugh Cure").

Last is another SF Avalon concert, this time with Country Joe & the Fish, the Sparrow, and the Doors. (Sorry for the glare.) The image features the famous line, "Break on through to the other side," alongside the Family Dog logo again.

Love the lettering!