The Zalkin Family Foundation

Manitou Fund

White Bear Lake, MN

Manitou Fund supports organizations in areas including education, arts and cultural preservation, tennis, and land conservation, with 2024 grants ranging from $10,000 to $1.75 million and a median of $50,000. Its 2024 grants went mainly to California, Minnesota, New York, Florida, and Rhode Island. It funds only preselected charitable organizations and does not accept unsolicited requests.

Carleton F and Ruth T Davidson Trust

Springfield, OH

The trust funds a range of charitable organizations, including those focused on community development, youth, seniors, literacy, and local history. Its 2024 grants ranged from $5,000 to $50,000, with a median of $15,000, and all went to recipients in Ohio. It supports preselected organizations only and does not accept unsolicited funding requests.

The Fritz and Mary Lee Duda Family Foundation

Dallas, TX

The foundation supports health care, education, social services, youth programs, Catholic community initiatives, and environmental work, with most 2024 funding going to Texas organizations. Its 62 grants ranged from $500 to $60,000, with a median of $3,000. It funds only preselected charitable organizations and does not accept unsolicited requests.

John R Peterson Foundation

San Diego, CA

The John R Peterson Foundation funds animal-welfare efforts that prevent pet homelessness, including spay-and-neuter programs, veterinary care, and support to help people keep their pets. In 2025, grants ranged from $524 to $231,500, with a median of $2,290, and went mainly to organizations in Hawaii and California, with some funding in Virginia. It does not accept unsolicited requests; it funds preselected organizations.

Shouvlin Foundation

Jacksonville Beach, FL

The Shouvlin Foundation supports charitable organizations with varied purposes, including food assistance, housing, education, and community services, and gave $2,500–$50,000 per grant in 2025 (median $10,000). Based in Florida, it funded organizations in several states, with the most grant dollars going to Ohio, California, Florida, Connecticut, and Pennsylvania. It makes grants only to preselected organizations and does not accept unsolicited requests.

Holleman Roy & Marian Fdn-Main

Saint Louis, MO

The foundation supports California organizations with varied purposes, including higher education, animal welfare, services for people with disabilities, and military families. Its 2025 grants ranged from $10,000 to $50,000, with a median of $15,000. It accepts unsolicited requests online through Wells Fargo Bank from 501(c)(3) organizations; the stated deadline is September 30.

The Tharani Family Foundation Inc

Miami Beach, FL

The Tharani Family Foundation supports charitable organizations, with recent grants for youth development, education, and figure skating. Its 2024 grants ranged from $500 to $5,000 (median $1,000) and went to organizations in New York, Florida, New Jersey, and North Carolina. It funds only preselected organizations and does not accept unsolicited requests.

Robert C & Constance S Henkel Fam Foundation

San Diego, CA

TPC Foundation Inc

Trabuco Canyon, CA

TPC Foundation Inc. funds charitable organizations working in areas including animal welfare, environmental education, water, Druze community life, and veterans’ healthcare, with 2024 grants ranging from $5,000 to $60,000 and a median of $10,050. Based in California, it gave primarily to organizations in California, Washington, Illinois, Maryland, and Massachusetts. It supports only preselected organizations and does not accept unsolicited funding requests.

Hedwig S Johannsen Trust

San Marcos, CA

The Grey Muzzle Organization

Raleigh, NC

Grey Muzzle funds U.S. nonprofits serving at-risk dogs age 7 and older, including programs for medical care, adoption, foster or hospice placement, and helping families keep senior dogs at home. Recent grants ranged from $6,000 to $41,200, with a median of $15,000. It invites only a limited number of new organizations to apply; interested nonprofits can join its mailing list for notices about calls for letters of inquiry.

Silicon Valley Community Foundation

Mountain View, CA

Silicon Valley Community Foundation funds work in areas such as housing, economic security, education, health, the environment, arts and culture, and civic engagement, with Community Action Grants supporting local, community-led organizations in San Mateo and Santa Clara counties. Its 2024 grants had a median of $51,716, though amounts varied widely; applications depend on the program, and SVCF states that it does not accept unsolicited proposals for advised funds.