We are fully supported by individual donations. Each donation, small or large, one-time or recurring, is gratefully accepted and directly invested in the community library for the benefit of the people of Palo Solo and surrounding communities.

Our operating costs, equipment purchases and maintenance, staff salaries and benefits, and youth baseball and soccer team sponsorships amount to around $15,000 a year.

All donations are tax-deductible in the United States. To see the official listing of the Lone Tree Institute as a 501(c)3 non-profit organization, please click here.

Credit card:  to make a donation with a credit or debit card, please use our partner non-profit Network for the Good: 


Check: we also gratefully accept personal checks made out to Lone Tree Institute and mailed to:

Lone Tree Institute
c/o Margaret Calkins
954 Washington St.
Gloucester, MA 01930

In-kind: if you are interested in visiting us in Nicaragua and/or contributing in-kind to one of our programs, please write: