unlike the pebbles series – which has been released over an extended period of time by several record labels and in a variety of formats – the 23 albums in the "highs in the mid-sixties series" were released only as lps and in a short time span of 1983 to 1986 (in fact, the 23rd album is the only 1986 release). this is one of the fastest series of releases among garage rock compilation albums. by way of example, the 28 lps in the pebbles series were released between 1978 and 1988, and the 20 lps in the rubble series were released between 1984 and 2002.