How do you remove a 70s doorknob with no obvious external screws?

There are no screws or holes to get knob off have tried plastic to try to unlatch the tongue with no luck Community manager's note: Check out How to replace a

How to remove a deadbolt with NO Visible SCREWS · KNIFE Like a Razor ! · Kwikset door

remove door knob with no screws or slot STEP 2 · If you find a slot, insert the flat-head screwdriver and push the detent to release the knob · If you find a small hole, use a

new slot sites with a free sign up bonus Comments282 · Door knob with no screws loose or fell off