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Bio
Newbery Honor winning author of the Tales from Alcatraz series. Co-author of DOGTOWN with @kaaauthor. The Tenth Mistake of Hank Hooperman, out now!
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Recent posts
✨Cover reveal!✨ I’m delighted to share my next book, LAST NIGHT AT THE CARNIVAL GRAVEYARD. Coming August 24, 2027.
A very big thank you to @100scopenotes for hosting the reveal!
About the book:
Noah has missed the first semester of middle school, while he and his anxious parents wait for signs his leukemia is in remission. On a night he can’t sleep, he spies an unusual procession when he looks out his window: A T-rex pulling a wagon full of toys. Are his eyes decieving him?
When he shares this news with his best friend, Jerad, he worries that Jerad will think he’s making it all up. But Jerad remembers the T-rex, named Crusher, that used to stand in the local toy store. The store had to close and the owner retired, but could some toys, even Crusher, have been left behind?
Told from the points of view of Noah, a kid who wants to put illness behind him, and Crusher, a mechanical T-rex with a gentle heart who wants to find homes for the toys left behind, Last Night at the Carnival Graveyard is part mystery, part adventure, and all soul.
@mackidsbooks #LastNightAtTheCarnivalGraveyard #mglit #middlegradebooks #GenniferCholdenko
05 Oct 2026
I can’t wait to share more about my next book, LAST NIGHT AT THE CARNIVAL GRAVEYARD.
Coming spring 2027.
05 Jun 2026
“You get to Alcatraz by being the worst of the worst. Unless you’re me. I came here because my mother said I had to.”
📚👕
#TalesFromAlcatraz #AlCaponeDoesMyShirts #middlegradebooks #mglit #GenniferCholdenko
13 Nov 2026
Dream come true. My book in a book vending machine.
@knopfyoungreaders @randomhousekids @rhcbteacherslibrarians #TheTenthMistakeOfHankHooperman #GenniferCholdenko #mglit #middlegradebooks
11 Nov 2026
“This story highlights the beauty of pet adoption and unconditional love.”
@sljournal thank you for this STARRED review of I AM A GOOD DOG! ⭐ What a treat for the finale of the Dogtown series.
💙 @kaaauthor @gowallacewest
@mackidsbooks #mglit #middlegradebooks #KatherineApplegate #GenniferCholdenko #WallaceWest
09 Nov 2026
Here’s a writing tip that always helps me when I’m feeling daunted: Just make your story a little better than it was the day before.
Books take a long time to write. Some days will be hard. But if I keep that simple goal in mind, I’m able to relax and have fun.
#AmWriting #AuthorLife
06 Nov 2026
I loved being on a panel with @jasminewargabooks, @angelacervantes_author, @kimberlybrubakerb, @jesskimwrites, and @josepabloiriarte, moderated by Carrie Friday.
The FAME conference in Florida was so much fun.
05 Nov 2026
At the FAME conference in Florida, I got to take this picture with Liz Fleming.
She chose AL CAPONE DOES MY SHIRTS to be the main Book of the Month selection in 2004.
My father LOVED Book of the Month. Made me so proud to have my book selected all those years ago.
04 Nov 2026
How pawsome to see I AM A GOOD DOG included on this @sljournal roundup as a starred series recommendation! ⭐ It was a joy writing the Dogtown books with @kaaauthor.
@gowallacewest @mackidsbooks #mglit #middlegradebooks #KatherineApplegate #GenniferCholdenko #WallaceWest
30 Oct 2026
I was overjoyed to attend the Las Vegas Book Festival this month to accept the 2026 Nevada Young Readers’ Award for THE TENTH MISTAKE OF HANK HOOPERMAN!
A huge thank you to Tracy Barkhuff, chair of the Nevada Young Readers Award, for your warm welcome and a great conversation. It was a terrific festival.
Nevada kids and librarians: Thank you. I’m a lucky author, indeed.
@knopfyoungreaders @randomhousekids @rhcbteacherslibrarians #TheTenthMistakeOfHankHooperman #GenniferCholdenko #mglit #middlegradebooks
28 Oct 2026
I’m so excited to visit Florida for the FAME Conference!
This year, THE TENTH MISTAKE OF HANK HOOPERMAN is nominated for the Sunshine State Young Readers Award, so I’m especially honored.
Librarians, I can’t wait to meet you!
@knopfyoungreaders @randomhousekids @rhcbteacherslibrarians #TheTenthMistakeOfHankHooperman #GenniferCholdenko #mglit #middlegradebooks #SSYRA
26 Oct 2026
@sljournal Journeys End, Adventures Begin - 6 Middle Grade Fiction Series. I AM A GOOD DOG 🐶⭐️ by @gennifercholdenko & @kaaauthor
26 Oct 2026
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