Members help support the work of the Foundation. Membership is $20 per calendar year, renewable the first of each year, and entitles the member to receive the newsletter and to vote at the Annual General Meeting. Donors are essential to the Foundation's effort to preserve and protect the house and garden. Categories are:

Friend $20-$99

Supporting $100-$999

Sustaining $1,000-$4,999

Sponsor $5,000-$9,999

Benefactor $10,000 plus