@ slaw
Most did not record LPs. Maybe less than 200 of the 15,000 garage rock combos who released 45s, went on to release an LP. Only about 50 of them broke through to any kind of regional or national success via an LP release. 13th Floor Elevators, Shadows Of Knight, Question Mark & The Mysterians, Blues Magoos, Chocolate Watch Band, Remains, are a few notable sucessful examples.
