Lost 3/4 of clutch peddle

Hi, I have a 70 dart with 833 and it always worked fine and today when I shifted in to first 3/4 of my clutch peddle is gone. Everything seems to be hooked up and I do have tension on the clutch but only the last quarter. I hobbled home with the car and it doesn't seem to be slipping or anything, just only have a little clutch and the peddle stays toward the bottom, (about 1/4 the way up.)

Any suggestions?