Dear Felix
After recently hearing about (Name of Organization), I spent some time researching the concept and purpose driving the organization, and I found myself deeply connected to your cause. You are addressing real problems in our society, and because I admire the integrity and efficiency with which you use your resources to establish services and directly support your target populations, I am writing today to express my support of your pursuit in the form of a monetary donation. Thank you for your courage and vision. Please keep up the good work.
Regards
Lydia