Arbuckle Inline by Nick Curtis is a free retro inline display font with a jaunty late-60s, early-70s mood. The letters are built from chunky, rounded geometric forms, then sliced with a narrow inline that gives the heavy shapes a lighter, poster-style bounce.
It works well for record sleeves, cafe branding, throwback packaging, event flyers, and title cards where a few big words can carry the look. As a free font, it also makes strong monograms and short headlines because those broad curves and playful cut-in details give even simple initials a very set, era-specific voice.