Lichtenstein's Haystacks and Cathedrals were his first collaboration with Gemini G.E.L. in Los Angeles, from January to July 1969 for the Haystacks, and until August for the Cathedrals.

There are 10 prints in the Haystack series, including three state editions produced from the plates used for Haystack #6. The first five prints in the series are executed in lithography, with white screenprinted borders that heighten the optical effects of the colors. The seventh print in the series is a relief print.