Episodes

  • The Missing Bison
    Jul 8 2026

    In the 1880s, a conservator at the Smithsonian set out for Montana to capture an American bison before the dwindling species vanished forever. He returned with six taxidermied bison that he displayed in the museum.

    The bison diorama wowed visitors so much that it helped kickstart a movement to save the species. But then, just like that, the stuffed bison vanished!

    Where did they go?

    With the nation's 250th birthday fast approaching, the director of the Smithsonian National Museum of Natural History set out to find the missing bison. It's a journey that led west —where it all began— and ended on the steps of the museum.

    Guests:

    Kirk Johnson, Director of the Smithsonian's National Museum of Natural History

    Siobhan Starrs, Senior Project Manager and Exhibition Developer at the Smithsonian’s National Museum of Natural History

    Jonny BearCub Stiffarm, Volunteer with the Fort Peck Tribal Bison program in Montana. Member of the Assiniboine Nation and a former Buffalo Program administrator at the World Wildlife Fund

    Jim Wood, Assistant Director for Communications at the Smithsonian's National Museum of Natural History

    This episode received support from Smithsonian's Our Shared Future: 250, a Smithsonian-wide initiative commemorating the nation's 250th. Major support for Smithsonian’s Our Shared Future: 250 has been provided by Lilly Endowment Inc. Additional generous contributions have been made by Target, Caterpillar Foundation, and the Gates Foundation.

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    33 mins
  • American Aspirations: A Nation in Pursuit
    Jun 24 2026

    Smithsonian Secretary Lonnie G. Bunch III has spent a lifetime thinking about how history gets told. Before becoming the head of the Smithsonian, he was a curator, someone whose job is deciding which stories, people, and objects help us make sense of ourselves. So as America approaches its 250th birthday, Lizzie wanted to know: if you had to tell the story of the United States through just a handful of things, where would you begin?

    In this special episode, Secretary Bunch puts his curator hat back on to lead Lizzie through American Aspirations, a new exhibition he co-curated. Starting with the desk on which the Declaration of Independence was drafted, they get up close with some of the nation's most treasured objects: Abraham Lincoln campaign swag, Amelia Earhart's flight suit, Thomas Edison's light bulb, and even a miniature Statue of Liberty (which is still pretty big!). What can these objects reveal about a nation still striving to become its best self?

    Guest: Lonnie G. Bunch III, Secretary of the Smithsonian Institution

    The American Aspirations exhibition at the Smithsonian Castle was co-curated by Smithsonian Secretary Bunch — alongside Abeer Saha, curator at the National Museum of American History, and Harry Rubenstein, curator emeritus at the National Museum of American History.

    American Aspirations received support from Jacqueline B. Mars and the Smithsonian’s Our Shared Future: 250, a Smithsonian-wide initiative commemorating the nation’s 250th. Major support for Our Shared Future: 250 has been provided by Lilly Endowment Inc. Additional contributions have been made by Target and the Gates Foundation.

    To watch a video version of this podcast find us on YouTube: https://www.youtube.com/smithsonian

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    42 mins
  • U.S. History in 100 Objects (with Roman Mars)
    Jun 17 2026

    A screw. A stuffed possum. A shoe-sizing device. What could any of these objects possibly tell us about the history of the United States?

    When we think of historic artifacts, we tend to picture the extraordinary: Abraham Lincoln's pocket watch, the original Kermit the Frog, Martin Luther King Jr.'s draft of the "I Have a Dream" speech. But the story of America can just as easily be found in the everyday objects that shape our lives.

    In this bonus episode, Lizzie sits down with Roman Mars to talk about his new series, A History of the United States in 100 Objects. Together, they explore how ordinary things can reveal distinctly American stories.


    Guests:

    Roman Mars, host and creator of 99% Invisible

    To pitch your object to Roman’s team, write to 100objects@99pi.org

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    31 mins
  • How Can You Forget Me
    Jun 10 2026

    Everyone thought ghosts lived in the basement of Stockton, California's old Daguhoy Lodge. So, nobody went down there. But when one man refused to be spooked, he made a discovery that would bring the ghosts back to life.

    In this episode, we explore how an accidental discovery resurrected the stories of a nearly forgotten generation of Filipino immigrants who came to work in the fields. Why did these men leave behind steamer trunks that remained unopened for decades? And what could we learn from the belongings found inside?

    We'll unpack the steamer trunks and dust off a fading piece of American history as we dive into the stories of these farmworkers and their surprising sense of fashion.


    Guests:

    Sam Vong, Curator of Asian Pacific American History at the Smithsonian's National Museum of American History

    Dillon Delvo, Co-Founder and Executive Director of Little Manila Rising in South Stockton, California

    Phillip Merlo, a historian and educator who serves as the Executive Director of the San Joaquin County Historical Society & Museum

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    28 mins
  • High Art, Low Ride
    May 27 2026

    How did a car with chopped suspension and hydraulics become a symbol of pride and self-expression for an entire community? We'll cruise back in time to see how lowriders emerged from the post-WWII car craze and became a powerful symbol of Mexican American pride. It's a long road with a few speed bumps, but lowriders are now more popular than ever (especially in Japan!)

    So, lean your seat back and see how chrome, paint, and a dose of defiance turned classic cars into rolling works of art that have cruised their way into the Smithsonian's National Museum of American History.

    Learn more about the Smithsonian's exhibition on Lowriders — Corazón y vida — HERE

    This project received federal support from the Smithsonian Latino Initiative Pool, administered by the Smithsonian National Museum of the American Latino.

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    32 mins
  • The People in the Pictures
    May 13 2026

    At the Smithsonian’s National Museum of the American Indian, archivists are working with Native communities to correct the historical record … one photo at a time.

    In this episode, we go inside the archives, where century-old photographs once labeled “Indian man” or “woman in costume” are being reexamined and renamed so they can be reconnected to living descendants. It’s a painstaking effort that’s also challenging the romanticized imagery popularized by photographers and anthropologists of the late 1800s, early 1900s.

    Think there might be photos of your ancestors in the Smithsonian Online Virtual Archives? Check here: https://sova.si.edu/

    You can read about the Smithsonian's Ethical Returns and Shared Stewardship Policy here: https://ncp.si.edu/SI-ethical-returns

    To submit a shared stewardship or ethical return inquiry or request, complete this form: https://survey.alchemer.com/s3/7447374/Shared-Stewardship-and-Ethical-Returns-Inquiry-Request-Submission-Form

    If you have questions about the policy, contact nmai-sser@si.edu.

    Guests:

    Emily Moazami, head archivist at the National Museum of the American Indian (NMAI) Archive Center

    Nathan Sowry, reference archivist at the National Museum of the American Indian (NMAI) Archive Center

    Rachel Menyuk, processing archivist at the National Museum of the American Indian (NMAI) Archive Center

    Special thanks to the Harmon Family:

    Leonard Harmon, Pam Pierce Harmon Johnston, Mike Harmon and Matthew Harmon

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    30 mins
  • May the 4th Be With You
    Apr 29 2026

    A long time ago, in movie theaters not far away, Star Wars: A New Hope revolutionized American entertainment. In honor of May the 4th, we explore how a scrappy space fantasy reinvented a tale as old as time — and gave Americans hope in a time of difficulty. We'll also trace the journey of two bickering droids from a galaxy far, far away to the Smithsonian's National Museum of American History.

    Guests:

    Ryan Lintelman, curator of entertainment at the Smithsonian National Museum of American History

    Eric Jentsch, curator at the Smithsonian National Museum of American History

    Dawn Wallace, objects conservator at the Smithsonian National Museum of American History

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    30 mins
  • Broad Stripes, Bright Stars, and White Lies
    Apr 15 2026

    As we approach the nation's 250th birthday, we are looking back at some of the most important moments in American history. One of those moments is when Betsy Ross sewed the first American flag. But, as we discovered, there’s actually no proof that Ross sewed the first flag. In fact, we don't even know what the first American flag even looked like!

    In this episode of Sidedoor, we unravel this vexillological tall tale to find out how this myth got started, and who Betsy Ross really was.

    Sidedoor also recently teamed up with the popular 99% Invisible podcast to explore the lesser-known history of the American flag. The episode, “Flag Days: Unfolding a Moment,” is available to listen to now.

    Guests:

    Jennifer Locke Jones, political and military history curator at the Smithsonian's National Museum of American History

    Marc Leepson, journalist, historian and author of the book Flag: An American Biography

    Marla R. Miller, historian and author of Betsy Ross and the Making of America

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    31 mins