; (2) enter into appropriate cooperative agreements and memoranda of understanding to provide technical assistance under subsection (d); and (3) create and adopt an official, uniform symbol or device for the Network and issue guidance for the use of such symbol or device. (c) Elements The Network shall encompass the following elements: (1) All units and programs of the National Park Service that are determined by the Secretary to relate to the history, construction, and legacy of the Transcontinental Railroad. (2) With the consent of each person owning any legal interest in the property, other Federal, State, local, and privately owned properties that— (A) have a verifiable connection to the history, construction, and legacy of the Transcontinental Railroad and are included in, or determined by the Secretary to be eligible for inclusion in, the National Register of Historic Places