Otis Rush band poster from SixtiesPosters.com
The 1960's were known for their "psychedelic" typefaces that reflected the cultural time period. Psychedelic typefaces could be described as free-flowing and each letter appears to almost to connect with one another. This era of type gave designers the opportunity to integrate type with other artistic elements--words became a part of an intricate design, molding around shapes, each letter appearing to have a unique quality.
Wes Wilson was known for his psychedelic art and typography and designed many posters for popular bands of the 1960's.
To see other psychedelic typefaces, visit Fontscape.