After leaving Brata in 1962, Krushenick gave solo shows at New York City's Graham Gallery in 1962 and 1964 and Fischbach Gallery in 1965. In 1966 came his first solo effort in Europe, at Galerie Müller in Stuttgart, Germany. In 1967, he gave solo shows in New York City and Paris as well as in Detroit, Michigan, and Vienna, Austria, while also receiving a fine arts fellowship from the John Simon Guggenheim Foundation. In 1968, the Center Opera Company of the Walker Art Center in Minneapolis, Minnesota, commissioned him to design the sets and costumes for a production of "The Man in the Moon", held in conjunction with a large survey of his works at the Center. Solo exhibitions at Harcus-Krakow Gallery in Boston, Massachusetts, and Galerie Renée Ziegler in Zurich, Switzerland, soon followed. In 1969, on the heels of another solo at Pace Gallery, Krushenick was the Fall term Artist-In-Residence at Dartmouth College's Hopkins Center for the Arts, where he mentored students and created new works, culminating in an exhibition of paintings and prints at the college's Jaffe-Friede Gallery. Earlier that year, he had served as a visiting critic at Yale University, and in years past, he had accepted invitations to work as a visiting artist at the School of Visual Arts in New York, the University of Wisconsin in Madison, and others.