At OSI, we protect land for people, for wildlife, forever. Learn More About Who We Are
A Place for Life.
What We Protect
New & Noteworthy
Featured News OSI Announces Million-Dollar Plan to Improve its Tahawus Property in the Adirondacks
OSI has announced a plan to make $1 million in capital improvements at its historic Tahawus property, where Theodore Roosevelt was staying when he received the message that he was to become President.Read More
Featured e-News JUNE 2019
OSI presents its Annual Report for 2018; Former OSI VP now NYS Commissioner; Grants available in Delaware River Watershed; Adirondack Biodiversity project and moreRead More
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