Donald And Martha Dewees Foundation

Partially Accessible
Private Foundation
GREENVILLE, DelawareMediumEIN: 260873138
Arts and Culture NonprofitsHistorical Preservation SocietiesAnimal SheltersHealth CharitiesEducation Nonprofits

The organization is a private foundation dedicated to supporting various charitable causes, with a strong emphasis on arts and culture, historical preservation, and educational initiatives. It provides funding to organizations such as the Delaware Art Museum and the Delaware Historical Society, reflecting its commitment to enhancing community cultural resources. Additionally, the foundation supports service dog training programs and health-related charities, indicating a broader interest in community welfare and assistance. The foundation primarily serves recipients in Delaware, but also extends its support to organizations in other states.

Source: Zeffy Agent · Mar 2026

Ideal Applicant

A Delaware-based or regionally connected nonprofit focused on arts, historical preservation, local services (including service-dog training) or event/fundraiser support seeking one-time operational or program funding.

Good Fit

  • Clear Delaware connection or demonstrable local impact.
  • Mission in arts, culture, historical preservation, local health/service programs, or service-dog training.
  • Request for operating support or an event/fundraiser sponsorship at the grant sizes observed ($2K–$31K).
  • Ability to prepare a concise formal written request and meet a Sept 30 annual deadline.
  • Willingness to accept single-year grants rather than multi-year commitments.

Geography

Moderate

Observed giving concentrates in Delaware (about 65% of 2023 dollars) but also includes recipients in two other states; the footprint is state-focused with limited out-of-state activity in the observed years.

Recipient Variety

Moderate

In 2023 the foundation made six grants to six distinct organizations and in 2022 it supported ten distinct recipients; the mix includes returning grantees and new entrants, indicating a moderate variety of independent recipients for a small private foundation.

New Applicants

Broad

Direct evidence of openness includes public application instructions, a named contact and PO Box, an annual Sept 30 deadline, and three new recipients in 2023; with two years of history this suggests unfamiliar applicants can realistically be considered.

Source: Zeffy Agent · Mar 2026