Texas State Archives:
Longhorn Cavern State Park - Master Plan (Title Page) - SP35_001A
Texas State Archives:
Longhorn Cavern State Park - Base Map - SP35_002
Texas State Archives:
Longhorn Cavern State Park - Base Map - SP35_170
Texas State Archives:
Longhorn Cavern State Park - Park Road Base Map - SP35_006
Texas State Archives:
Longhorn Cavern State Park - Layout Plan - SP35_007
Texas State Archives:
Longhorn Cavern State Park - Longhorn Cavern - SP35_152
Texas State Archives:
Longhorn Cavern State Park - General Development and Cavern Trip Features - SP35_132
Texas State Archives:
Longhorn Cavern State Park - Cavern Entrance - SP35_008
Texas State Archives:
Longhorn Cavern State Park - Suggested Treatments of Main Entrance Portal at Highway 66 - SP35_020
Texas State Archives:
Longhorn Cavern State Park - Foot Trails - SP35_012
Texas State Archives:
Longhorn Cavern State Park - Cavern Cleanup - SP35_014
Texas State Archives:
Longhorn Cavern State Park - Stone Walls - SP35_044
Texas State Archives:
Longhorn Cavern State Park - Moving and Planting Trees and Shrubs - SP35_095
Texas State Archives:
Longhorn Cavern State Park - Administration Building - SP35_070
Texas State Archives:
Longhorn Cavern State Park - Refectory - SP35_077
Texas State Archives:
Longhorn Cavern State Park - Caretaker's Residence - SP35_116
Texas State Archives:
Longhorn Cavern State Park - Caretaker's Dwelling - SP35_128
Texas State Archives:
Longhorn Cavern State Park - Custodian's Cottage - SP35_122
Texas State Archives:
Longhorn Cavern State Park - Cabin B - SP35_118
Texas State Archives:
Longhorn Cavern State Park - Cabin A - SP35_153
Texas State Archives:
Longhorn Cavern State Park - Master Plan - SP35_003