The following documents provide a brief history and timeline for practices in the Shambhala tradition.
The first is a “Timeline of Core Teachings and Practices in Vajradhatu and Shambhala” (Prepared by the “Path Teaching and Practices” Working Group of the Process Team, by Loppon Lodro Dorje, Kristine McCutcheon, and Fred Meyer, with a few edits by Larry Mermelstein):
CorePracticeTimelineVajradhatuShambhala1971To2018_VersionAug 22_2019
The second is a “Brief History of Practice Traditions,” an essay by Dorje Loppön Lodrö Dorje prepared as an appendix to the document “The Shambhala Vajrayana Path” on April 26, 2007.
BriefHistoryOfPracticeTraditions2007update May 2019