click to enlarge
Rodney Konopaki and Bob Cross wiping Gateway copper plate, 1986 TGL Mount Kisco, NY photo: Marabeth Cohen-Tyler

 click to enlarge
Frankenthaler and Bob Cross applying acid with baster for Gateway spit bite copper plate, Tyler holding proof, 1986 TGL Bedford Village, NY photo: Marabeth Cohen-Tyler

 click to enlarge
Frankenthaler pouring wax for Gateway bronze screen, 1986 Tallix Foundry, Peekskill, NY photo:Kenneth Tyler

 click to enlarge
Frankenthaler heating newly applied acid patina on Gateway, 1986 Tallix Foundry, Peekskill, NY photo: Marabeth Cohen-Tyler

 click to enlarge
Inking using fingertips on magnesium plate for Gateway, 1986 TGL Bedford Village, NY photo: Steven Sloman

 click to enlarge
Bob Cross wiping plate tone from Gateway magnesium plate, 1986 TGL Bedford Village, NY photo: Steven Sloman

 click to enlarge
Frankenthaler at Tyler Graphics in 1987 photo: Marabeth Cohen-Tyler

 click to enlarge
Frankenthaler painting Gateway bronze panels with a mixture of chemicals, pigments and dyes, 1987 Tallix Foundry, Beacon, NY photo: Kenneth Tyler

 click to enlarge
Bronze panels for Gateway, 1987 Tallix Foundry, Beacon, NY photo: Kenneth Tyler

 click to enlarge
Richard Polich discussing surfaces on wax samples with Tyler and Frankenthaler, 1988 Tallix Foundry, Peekskill, NY photo: Marabeth Cohen-Tyler