• Astronomy (includes Observatories)

• 298.

Gmto Corporation

World’s most powerful telescope designed to discover the unknown.

• Eye Diseases, Blindness & Vision Impairment

• 299.

Optical Society of America

The Rochester Section of OPTICA, formerly the Optical Society of America: a group of people in the optics industry invested in local promotion of #optics.

• Humanities Organizations

• 300.

Gladdening Light Inc.

GladdeningLight is where art and spirit meet.

• Human Service Organizations

• 301.

Hope Builders

Advancing the Gospel, Training Leaders, & Planting Churches by Indigenous Disciple-Making in Africa & Southeast Asia.

Global Surgical Expedition

Delivering surgical care to those in need in underserved countries.

• Historical Societies and Related Activities

• 303.

Order of the Lion Rampant

501(c)(3) focused on medieval historical research and living history events.

• Medical Specialty Research

• 304.

Global Society of Rare Genitourinary Tumors Inc

International Society dedicated to improving the care of rare GU tumors through cutting edge science and the promotion of education.

• Libraries, Library Science

• 305.

Opus Archives and Research Center Inc

Collections and libraries of eminent scholars in Depth Psychology and Mythology - Joseph Campbell, James Hillman, Marion Woodman and others.

• Historical Societies and Related Activities

• 306.

AUGUSTAN SOCIETY

The Augustan Society, Inc. , promotes the study and traditions of chivalry, genealogy, heraldry, history before AD 1700, and nobility by providing unique, high-quality resources, including a library, publications, and services for members and the public.