Angel Flores' pencil on paper sketches for his Zipper Paintings. The series was created by the artist around 1965, when he was living in New York. It refers to the slashed paintings of Italian artist Lucio Fontana.

The sketch includes the work, Three Paintings and One Drawing, a four-paneled painting composed of three acrylic paintings with zippers, in violet, orange, and pink, and a blank canvas; and Homage to Fontana, a lone slashed painting with a diagonal zipper.

The works were shown on the television show, 'Two For The Road,' and were exhibited at Joy Dayrit's Print Gallery in 1971. Three Paintings and One Drawing was included in 'Summer Exhibition' at Cultural Center of the Philippines (CCP), curated by Roberto Chabet in 1970, and in the survey curated by Ray Albano, 'A Decade of Developmental Art,' also at the CCP, in 1979.