Soil Health Institute

The Morton Arboretum

Lisle, IL

The Morton Arboretum funds tree and urban-forestry work, plant collections, conservation, research, and related community programs, with grants typically around $24,000 (2024 awards ranged from about $5,000 to $75,000). Its giving is concentrated in Illinois, and it offers specific grant opportunities through requests for proposals; the profile does not state whether it accepts unsolicited requests.

Gidel Family Foundation Inc

Sarasota, FL

American Association of Neurosurgeons Inc

Rolling Meadows, IL

The AANS promotes the highest quality of patient care and advances the specialty of neurological surgery.

Ann O'Donnell Trumbull Perpetual Charitable Trust

Peoria, IL

The trust supports education and tuition, food assistance, community services, emergency response, and fundraising for childhood disease research. Its 2024 grants ranged from $1,250 to $70,000, with a median of $6,000; 91% of funding went to Illinois, with smaller grants in Michigan, Wisconsin, Iowa, and Florida. It lists a contact and resume as required materials and has no deadline, but does not state whether it accepts unsolicited requests.

Wanda and Janice Wilson Foundation Inc

Port Orange, FL

The Clementine Zacke Foundation

Palm City, FL

The Clementine Zacke Foundation supports church and hospice operations and programs, scholarships, and educational opportunities, primarily in Florida, with occasional grants in Georgia. Its 2025 grants totaled $52,000 across 13 awards, ranging from $400 to $26,000, though most were $1,000 scholarships; scholarship applicants must be graduates of a Martin County public high school. The 2024 filing says it does not limit giving to preselected organizations and describes an application process, but no current application cycle is specified.

Universities Research Association Inc

Washington, DC

URA primarily supports university research, research facilities, education, and STEM workforce development, with 2025 grants going to universities in multiple U.S. states. Its typical grant was about $15,000 (2025 median; awards ranged from $5,059 to $39,243), and it also offers a visiting scholars program with awards up to $50,000. The profile does not state whether it accepts unsolicited requests.

The William W & Nadine M McGuire Family Foundation

Wayzata, MN

The Rose and David Dortort Foundation

Los Angeles, CA

The Rose and David Dortort Foundation supports organizations in areas including environment, animal welfare, health, arts, education, religion, and civic engagement, with most 2025 grant dollars going to California. Its 35 grants ranged from $5,000 to $45,000, with a median of $10,000; the profile does not state whether it accepts unsolicited requests.

Community Foundation for Palm Beach and Martin Counties Inc

West Palm Beach, FL

The Foundation funds nonprofits working in Palm Beach and Martin Counties, or projects that directly benefit residents there, with priorities including capacity building, economic opportunity, education and youth, thriving communities, and crisis response. Its 2024 grants had a median of $30,000, though awards ranged widely, and it accepts unsolicited requests through a competitive process that begins with a Letter of Inquiry.

American Ornithological Society

Chicago, IL

See schedule othe American Ornithological Society (AOS) is an international membership organization that connects ornithologists, science, and bird conservation by supporting science that advances the understanding and conservation of birds, promoting broad access to ornithological science, supporting ornithologists throughout their career paths, and fostering a welcoming, diverse, supportive, and dynamic ornithological community.

American College of Veterinary Internal Medicine

Englewood, CO

The mission of the American College of Veterinary Internal Medicine (ACVIM) is to enhance animal and human health by advancing veterinary internal medicine through training, education, an discovery. The ACVIM is the American certifying organization for veterinary specialists in cardiology, large animal internal medicine, neurology, oncology, nutrition, and small animal internal medicine.