- “A New Lincoln Discovery: Family of Lincoln Enthusiast Finds Unprecedented Autograph Collection and Lincoln-Related Items,” Lincoln Lore No. 1934 (Summer 2022): 14-19.
- “The Original Lincoln Memorial Stands Forgotten in D.C.’s Judiciary Square,” Washington Post, May 29, 2022.
- “This Man was the Only Eyewitness to the Deaths of Both Lincoln and Garfield: Almon F. Rockwell’s newly resurfaced journals, excerpted exclusively here, offer an incisive account of the assassinated presidents’ final moments,” Smithsonian Magazine (online), posted January 7, 2022.
- “This Civil War–Era Eagle Sculpture Was Made Out of Abraham Lincoln’s Hair,” Smithsonian Magazine (online), posted Sept. 23, 2021.
- “How and Why Did Robert Lincoln Decide to go to Harvard? Newly Revealed Letter Gives the Answer,” Lincoln Lore, No. 1928 (Winter 2020): 11-13.
- “Robert Lincoln Writes About the End of His Mother’s Estrangement,” Lincoln Lore, No. 1927 (Fall 2020): 11-13.
- “Interview with Jason Emerson Regarding his New Book, Mary Lincoln for the Ages,” Lincoln Lore, No. 1923 (Fall 2019): 16-21.
- “Q&A with Jason Emerson: Mary Lincoln for the Ages,” The History Author Show, www.historyauthor.com, posted August 5, 2019.
- “Give While You Live: The Generosity of Julius Rosenwald,” pamphlet for Lincoln Home National Historic Site and the Springfield Rosenwald Initiative, summer 2019.
- “Plymouth Freeman: American Revolution Veteran, Former Slave,” posted on New York Almanac (www.newyorkalmanack.com), February 24, 2019
- “As Willie Lay Dying, Mary Lincoln Gets Pilloried in a Poem,” For the People: A Newsletter of the Abraham Lincoln Association 17, no. 2 (Summer 2015): 7-9.
- “A New American Anthem,” in Gettysburg Replies: The World Responds to Abraham Lincoln’s Gettysburg Address, edited by Carla Knorowski (Abraham Lincoln Presidential Library Foundation 2015).
- “Lincoln Treasures,” in Treasures of the Abraham Lincoln Presidential Library, edited by Glenna R. Schroeder-Lein (State of Illinois Historic Preservation Agency, 2014).
- “Lincoln Considered: Sally Field as Mary Todd Lincoln in the new Lincoln movie,” Civil War Monitor (Spring 2013).
- “The Rise and Fall of the Union Balloon Corps,” Civil War Times (December 2012).
- “A Medal for Mrs. Lincoln,” The Register of the Kentucky Historical Society 109, no. 2 (Spring 2011)
- “Mary Todd Lincoln,” Times Topics page, New York Times.
- “Mary Lincoln: An Annotated Bibliography Supplement,” Journal of the Illinois State Historical Society 104 no. 3 (Fall 2011): 238-249.
- “Lincoln’s Son Loved the Links: Robert Todd Lincoln and the Game of Golf,” Lincoln Forum Bulletin 28 (Fall 2010): 8-9, 12.
- ‘I have done my duty as I best know and Providence must take care of the rest’: Reconsidering Mary Lincoln’s Sanity and Robert Lincoln’s Motivations, Bulletin of the 68th Annual Meeting of the Lincoln Fellowship of Wisconsin, April 18, 2009, Historical Bulletin Number 63.
- “Mary Lincoln: An Annotated Bibliography,” Journal of the Illinois State Historical Society 103, no. 2 (Summer 2010): 180-235.
- “The Secret Six” American Heritage, 59, no. 3 (Fall 2009): 20-24.
- “Six of the Top Recent Books on Abraham Lincoln” American heritage (Spring 2009.
- “New Mary Lincoln Letter Found” Journal of the Illinois State Historical Society, 101, no. 3-4 (March 2009): 315-328.
- “Abraham Lincoln as an Advocate of Transportation” Defense Transportation Journal, 65, no. 1 (February 2009): 18-20.
- “A Man of Considerable Mechanical Genius: Abraham Lincoln was the only U.S. president to hold a patent,” Invention & Technology, 23, no. 4 (Winter 2009): 10-13.
- “President Lincoln’s Patent Model,” Civil War Times, 48, no. 1 (February 2009): 57-59.
- “New Evidence From an Ignored Voice: Robert Todd Lincoln and the Authorship of the Bixby Letter,” Lincoln Herald 110, no. 2 (summer 2008): 86-116.
- “In His Father’s Shadow: Searching for the Real Robert Todd Lincoln,” Civil War Times, 47, no. 5 (October 2008): 54-57.
- “Mary Lincoln’s Madness,” (book excerpt), U.S. News & World Report, Collector’s Edition, “Secrets of the Civil War,” (2008): 52-53.
- The Madness of Mary Lincoln (book excerpt), published on the Cleveland Civil War Round Table website.
- “Mary Todd Lincoln’s Lost Letters from the Asylum,” Civil War Times (October 2007)
- “Aftermath of an Assassination: Recently Discovered Letters from the Days After Lincoln’s Murder,” American History 41, no. 2 (June 2006): 24-30, 74.
- “A Very Dreadful Night: Robert Todd Lincoln and his Father’s Assassination,” Lincoln Forum Bulletin 18 (November 2005): 10-11.
- “The Poetic Lincoln,” Lincoln Herald 101, no. 1 (Spring 1999): 4-12.