We originally broadcast this program in April, and it has been one of our most popular shows. We bring it to listeners again during our Labor Day Holiday.

Our guest is communication expert Christine M. Bacon, Ph.D., an author, speaker, trainer, and the radio talk-show host of "Breakfast with Bacon: The Relationship Doctor." Her latest book is "The Super Couple: A Formula for Extreme Happiness in Marriage." She talks with host Dr. Alan Campbell about the personal crisis that led her to study successful relationships.

Jack Kelly is a journalist, novelist, and historian, whose books include Band of Giants: The Amateur Soldiers Who Won America's Independence, which received the History Award Medal from the Daughters of the American Revolution. He has contributed to the Wall Street Journal, American Heritage, and other national periodicals and is a fellow of the New York Foundation for the Arts. He has appeared on the History Channel and been interviewed on National Public Radio.

Host Alan Campbell travels back in time with two authors, Kevin Boyle and Greg Messel, to revisit a strange and “horrible” year: 1968.

Dr. Kevin Boyle is an historian of 20th century United States with a particular interest in modern American social movements. Boyle has published widely and received various awards, including finalist for the Pulitzer Prize. Boyle’s upcoming books are The Splendid Dead, a micro-history of political extremism in the early 20th century, and The Splintering, a narrative history of the 1960s.

Greg Messel has contributed to a variety of publications and won a Wyoming Press Association Award as a columnist. His recently published Dreams That Never Were is his eleventh novel and is a historical fiction account of the events surrounding the assassination of Senator Robert F. Kennedy.

Todd Zwillich, NPR’s Washington Correspondent and host on The Takeaway and 1A, crafted an audiobook telling the story of John C. Houbolt, an unsung hero of Apollo 11 and the man who showed NASA how to put America on the moon.

According to Zwillich (and many from NASA), without John C. Houbolt, a mid-level engineer at NASA, Apollo 11 would never have made it to the moon.

Top NASA engineers on the project, including Werner Von Braun, strongly advocated for a single, huge spacecraft to travel to the moon, land, and return to Earth. It's the scenario used in 1950s cartoons and horror movies about traveling to outer space.

Houbolt had another idea: Lunar Orbit Rendezvous. LOR would link two spacecraft in orbit while the crafts were travelling at 3,600 miles an hour around the moon. His plan was ridiculed and considered unthinkable. But this junior engineer was irrepressible. He stood by his concept, fired off memos to executives, and argued that LOR was the only way to success.

Visit lorigottlieb.com for more.