The Clark County Planning Commission Research Library Collection (1911-2004) consists of reports, publications, and proposals gathered by the Clark County Planning Commission that focus on the environmental impact of proposed developments, construction, or infrastructure improvements around the county. The collection contains materials related to various local, state, federal, and inter-agency workshops, committees, and agencies. Documents include activity reports, impact statements, annual budgets and reports, and detailed studies. The majority of the collection dates from 1970 to 1999.

Collection is comprised of materials dating from approximately 1971 to 1996 about the Las Vegas Clark County Library District. Collection materials also include Charles Hunsberger's subject files from when he was library director of LVCCLD. The collection includes annual financial reports, clippings about the library district, photographs, master plan documents for Nevada libraries, and staff newsletters. In addition, the collection also includes materials documenting Hunsberger's efforts to secure a $22.2 million library bond in 1985.