The guidelines, first published in 2014 as a “model and guide,” were modestly updated in 2017 to address changes to Land Trust Standards and Practices and the latest WeConservePA research. They were updated in 2022 to address a change in Pennsylvania law pertaining to condemnation. In 2024, they were reframed to serve as guidelines to accompany a separate, brief amendment policy. Andrew M. Loza is the author. Justin Hollinger, Esq., provided legal review and editing for the 2024 edition. Patricia L. Pregmon, Esq., provided legal review of the 2017 and 2014 editions.