Donald l Horn aka Donnie is a playwright, historian, LGBTQ leader, author, director, activist, set designer and producer (of well over 250 theatrical productions in the past 35 years) and the founder of triangle productions! a theatre company established in 1989 and based in Portland, Oregon. He started triangle when he couldn't get his first play produced (After the Rain). In its history of a theatre company, it is known for provocative, relatively unknown, rarely produced plays. triangle is considered to be one of the oldest LGBTQ identified theatres in the United States. Throughout his life has been a strong advocate for the underdog. His first book, Crumbs of Love (and that’s all you’ll ever get), was well-received, he has finished the sequel, Pinch Me. His second book, Agapi Mou (my beloved), is part love story, heartache and historical fiction about the Island of Zakynthos, Greece. It has been translated into Greek by Sophia Levandis. In 2011 he wrote three books: Gracie (a biography about Gracie Hansen), Gracie Hansen’s PARADISE and Lost History of Oregon: A hotel by the name of Hoyt. Over the past several years he has been writing a trilogy entitled How Do You Say Murder in Greek? which deals with a twenty-five-year-old murder on the island of Zakynthos, Greece. He is also the author alongside collaborator Walter W Cole/Darcelle with Darcelle: Looking from my mirror and The Many Shades of Being Darcelle.

On November 2023 Donnie's play Make Me Gorgeous! premiered off-Broadway at Playhouse 46 - running 119 performances, garning a Show Score of 90, three off-Broadway nominations (Lucille Lortel, Drama Desk, and off-Broadway Alliance (winner). Wade McCollum premiered in this one-person play with Darius Rose aka Jackie Cox taking over.

He has written two Oregon Encyclopedia articles 1)  Gracie Hansen - https://oregonencyclopedia.org/articles/hansen_gracie/#.XFHk8s9Kit8 2) Nancy Boggs Mullery (1833–1905) (oregonencyclopedia.org)

He has written over twenty three plays and musicals some include ’69-The Sexual Revolution Musical (which won two Portland Area Music Theatre Awards for Best Songs) and the musical about Gracie Hansen, Gracie – a musical adventure (nominated for four PAMTA’s including Best Original work). His musical Ari-Maria about Aristotle Onassis and Maria Callas premiered in Portland in 2013 and he premiered a new work about Native American jazz great Jim Pepper - The Jim Pepper Project in 2014. This received funding including National Endowment for the Arts to tour throughout the State of Oregon in 2015. He followed that project up with a musical based upon the legendary Portland theatre, Storefront entitled Storefront Revue: The Babes are BACK!, a drama about George/Christine Jorgensen entitled TRANS-formation in 2018, and in 2019 premieres Darcelle: That's No Lady along with a Jewish comedy, Life. According to Morty and Ruth, a musical about Tammy Wynette entitled Me and Tammy and another historical musical about Nancy Boggs entitled Sex on the River. 

In 2021, he and his theater company triangle productions! received the second highest award from the State of Oregon - Oregon Heritage Excellence Award for his multi-faceted Darcelle Project. 

Currently working on gathering, documenting and securing Oregon's vast LGBTQ history, The Umbrella Project - www.umbrellaprojectoregon.com

You can check out his life, achievements, etc. by going to www.donnieshow.com