There was, beneath this, a darkness to many of his works, notwithstanding their irreverence. “Bed” (1955) was gothic. The all-black paintings were solemn and shuttered. The red paintings looked charred, with strips of fabric akin to bandages, from which paint dripped like blood. “Interview” (1955), which resembled a cabinet or closet with a door, enclosing photos of bullfighters, a pinup, a Michelangelo nude, a fork and a softball, suggested some black-humored encoded erotic message.

There were many other images of downtrodden and lonely people, rapt in thought; pictures of ancient frescoes, out of focus as if half remembered; photographs of forlorn, neglected sites; bits and pieces of faraway places conveying a kind of nostalgia or remoteness. In bringing these things together, the art implied consolation.

Mr. Rauschenberg, who knew that not everybody found it easy to grasp the open-endedness of his work, once described to the writer Calvin Tomkins an encounter with a woman who had reacted skeptically to “Monogram” (1955-59) and “Bed” in his 1963 retrospective at the Jewish Museum, one of the events that secured Mr. Rauschenberg’s reputation: “To her, all my decisions seemed absolutely arbitrary  as though I could just as well have selected anything at all  and therefore there was no meaning, and that made it ugly.

“So I told her that if I were to describe the way she was dressed, it might sound very much like what she’d been saying. For instance, she had feathers on her head. And she had this enamel brooch with a picture of ‘The Blue Boy’ on it pinned to her breast. And around her neck she had on what she would call mink but what could also be described as the skin of a dead animal. Well, at first she was a little offended by this, I think, but then later she came back and said she was beginning to understand.”

Growing Up With Scraps

Milton Ernest Rauschenberg was born on Oct. 22, 1925, in Port Arthur, Tex., a small refinery town where “it was very easy to grow up without ever seeing a painting,” he said. (In adulthood he renamed himself Robert.) His grandfather, a doctor who emigrated from Germany, had settled in Texas and married a Cherokee. His father, Ernest, worked for a local utility company. The family lived so frugally that his mother, Dora, made him shirts out of scraps of fabric. Once she made herself a skirt out of the back of the suit that her younger brother was buried in. She didn’t want the material to go to waste.

For his high school graduation present, Mr. Rauschenberg wanted a ready-made shirt, his first. All this shaped his art eventually. A decade or so later he made history with his own assemblages of scraps and ready-mades: sculptures and music boxes made of packing crates, rocks and rope; and paintings like “Yoicks,” sewn from fabric strips. He loved making something out of nothing.