Irwin & Leighton, Inc.



Irwin & Leighton Celebrates 100th Anniversary

2009 marks the 100th Anniversary of the founding of Irwin & Leighton by Alexander Dickson (A.D.) Irwin, Jr. and Archibald Ogilvie (A.O.) Leighton.
On Saturday evening, May 9th, 2009, employees, guests, and distinguished retirees gathered at the Aronimink Golf Club in Newtown Square, Pennsylvania, to celebrate Irwin & Leighton’s 100th year in business.
As a special momento, every employee received a special First Edition of Our First 100 Years, a commemorative book that highlighted a selection of the many pioneering projects Irwin & Leighton is proud to have partnered in since its founding in 1909. Links to PDFs of the various chapters of the book are below. If you would like a copy of Our First 100 Years, please contact us.
Irwin & Leighton – Our First One Hundred Years
– Foreward and Introduction
– Chapter 1:  A Great Partnership Begins
– Chapter 2:  Breaking Ground — 1909-1929
– Chapter 3:  Perseverance and Responsiveness — 1930-1949
– Chapter 4:  The Pivotal Years of the First Transition — 1950-1959
– Chapter 5:  Broadening Expertise and Relationships — 1960-1969
– Chapter 6:  A Decade of Dynamic Growth — 1970-1979
– Chapter 7:  Retooling for the Future — 1980-1989
– Chapter 8:  Cementing and Expanding Relationships — 1990-1999
– Chapter 9:  Vibrant and Ready for the Future — 2000-2009

© 2010 Irwin & Leighton