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"Frontier No. 4," 1958, Oil and alkyd on paperboard, 15 x 18 in. (38.1 x 45.7 cm). Private collection. Courtesy Locks Gallery, Philadelphia
Summer 1958 (continued)

Motherwell and Frankenthaler leave Madrid the next morning and settle in Saint-Jean-de-Luz, France, a small fishing village on the Atlantic coast. They rent a large villa where they can both paint. During their time there they visit Toulouse, Bayonne, the caves at Lascaux and Altamira (crossing back over the Spanish border to see the latter) and attend a bullfight in Biarritz.In Saint-Jean-de-Luz, Motherwell works at a furious pace producing over fifty paintings, including several major new series:  the Frontiers, the Two Figures, and the Iberias. They return to New York at the end of August.