| From Ascending rooms to express elevators: A history of the passenger elevator in the 19th century LE Gray Elevator World Inc, 2002 | 35 | 2002 |
| The Fireproof Building: Technology and Public Safety in the Nineteenth-Century American City by Sara E. Wermiel L Gray The Journal of the Society of Architectural Historians 60 (2), 242-243, 2001 | 10 | 2001 |
| Type and Building Type: Newspaper/Office Buildings in Nineteenth-Century New York LE Gray The American Skyscraper: Cultural Histories, 85-97, 2005 | 6 | 2005 |
| The Office Building in New York City, 1850-1880 LE Gray Cornell University, 1993 | 6 | 1993 |
| Lift Books 1890-1940 LE Gray 4th Symposium on Lift and Escalator Technologies 4 (1), 77-86, 2014 | 3 | 2014 |
| Two cars in one shaft L Gray Elevator World 54 (5), 96-102, 2006 | 3 | 2006 |
| The 1935 Code of Practice for the Installation of Lifts and Escalators LE Gray 6th Symposium on Lift and Escalator Technologies 6 (1), 93-100, 2016 | 2 | 2016 |
| Key moments in recent history: the origins of the exterior glass elevator LEE GRAY Elevator World 53 (8), 2005 | 2 | 2005 |
| The Code Writers of 1921. L Gray Elevator World 56 (5), 2008 | 1 | 2008 |
| Elevator Thresholds: Passenger Safety in the Early 20th Century L Gray Elevator World 55 (6), 66, 2007 | 1 | 2007 |
| The 1908 Singer Building elevators LEE GRAY Elevator World 54 (4), 2006 | 1 | 2006 |
| The largest elevators in the world L Gray Elevator World 54 (9), 2006 | 1 | 2006 |
| James Mapes Dodge (1852-1915): portraits-brief biographies of inventors, engineers, and innovators: the men and women who invented vertical transportation LEE GRAY Elevator World 53 (6), 2005 | 1 | 2005 |
| THE TRACTION ELEVATOR: PART TWO. THE FIRST ELECTRIC MACHINES 1891-1899 L Gray Elevator World 52 (9), 129-130, 2004 | 1 | 2004 |
| THE TRACTION ELEVATOR: PART ONE- ORIGINS 1877-1891 L Gray Elevator World 52 (8), 156-159, 2004 | 1 | 2004 |
| The invention of the automatically leveling elevator. I. L Gray Elevator World 51 (9), 102-105, 2003 | 1 | 2003 |
| PORTRAITS: BRIEF BIOGRAPHIES OF INVENTORS, ENGINEERS AND INNOVATORS: THE MEN AND WOMEN WHO INVENTED VERTICAL TRANSPORTATION. LEE GRAY Elevator World, 2003 | 1 | 2003 |
| Pattern and Context: Essays on Cesar Pelli LE Gray, D Walters University of North Carolina at Charlotte, 1992 | 1 | 1992 |
| The National Association of Elevator Contractors 1950-1974: Building Community. L Gray Elevator World 72 (4), 2024 | | 2024 |
| Fred A. Annett’s Electric Elevators (1927): Part L Gray image, 2024 | | 2024 |
