President Jimmy Carter’s legacy of giving back endures in several nonprofits through which he and his wife, Rosalynn Carter, worked in the almost 50 years after they left the White House.

Joe Biden is the consummate Washington insider. Jimmy Carter was anything but. Yet the 46th and 39th U.S. presidents had a decades-long friendship starting when Biden, as a young Delaware lawmaker, became the first sitting senator to endorse Carter’s outsider White House bid in 1976.

Members of Congress, the Supreme Court and other dignitaries will gather at the U.S. Capitol on Tuesday for a lying-in-state ceremony for former President Jimmy Carter.

Perhaps Carter’s most revealing poem, “I Wanted to Share My Father’s World,” concerns the man who never got to see his namesake son’s achievements. He wrote that he despised Earl’s discipline, and swallowed hunger for “just a word of praise.”

Michael Tropp has met seven presidents and visited all 39 presidential gravesites. This presidential history buff just paid his respects to Jimmy Carter.

The Carters, who long put their faith into action, were in Milwaukee in June 1989 as part of a Habitat for Humanity project building homes. They, along with scores of volunteers, hammered, sawed and painted to construct six homes near North 23rd and West Walnut streets.

The Carters met and raised their family in Plains, Ga. and returned to their beloved hometown after Jimmy's presidency

"From the Plains Peanut Festival to the Governor’s Mansion, to the White House—and to communities around the globe—they remained grounded and humble, and Plains always remained home in their hearts.”

On Tuesday, Carter's body will be flown from Atlanta to Joint Base Andrews in Maryland, where his casket will be transferred with ceremony to a hearse. From there, a motorcade will proceed to the U.S. Navy Memorial, where his casket will then be transferred from a hearse to a horse-drawn caisson with ceremony.

The San Antonio affiliate of Habitat for Humanity, one of the oldest and most active chapters in the nearly 50 years of the global affordable-housing network, is raising funds for a “tribute home” to be built this year in memory of President Jimmy Carter and his wife Rosalynn.

“Jimmy Carter was always an outsider ,” said biographer Jonathan Alter, explaining how Carter capitalized on the fallout of the Vietnam War and Watergate scandal that toppled Richard Nixon. “The country was thirsting for moral renewal and for Carter, as this genuinely religious figure, to come in and clean things up."