its activities, or its services. The Foundation may not accept any such gift, devise, or bequest which entails any expenditure other than from the resources of the Foundation. An interest in the real property includes, among other things, easements or other rights for preservation, conservation, protection, or enhancement by and for the public of natural, scenic, historic, scientific, educational, inspirational, or recreational resources. A gift, devise, or bequest may be accepted by the Foundation even though it is encumbered, restricted, or subject to beneficial interests of private persons if any current or future interest therein is for the benefit of the Administration, its activities, or its services. (d) Use of funds, investment Except as otherwise required by the instrument of transfer, the Foundation may sell, lease, invest, reinvest, retain, or otherwise dispose of or deal with any property or income thereof as the Board of the Foundation may from time to time determine. The Foundation shall not engage in any business, nor shall the Foundation make any investment that may not lawfully be made by a trust company in the District of Columbia, except that the Foundation may make any investment authorized by the instrument of transfer, and may retain any property accepted by the Foundation. The Foundation may utilize the services and facilities of the Administration, and such services and facilities may be made available on request to the extent practicable without reimbursement therefor. (e) Succession, powers and liability The Foundation shall have perpetual succession, with all the usual powers and obligations of a corporation acting as a trustee, including the power to sue and to be sued in its own name, but the members of the Board of the Foundation shall not be personally liable, except for malfeasance. The Foundation shall have the power to enter into contracts, to execute instruments, and generally to do any and all lawful acts necessary or appropriate to its purposes. (f) Bylaws In carrying out the