William Porter: Grand Canyon and Colorado River [GCV3]
William Porter: Watch cat [GCV1]
William Porter: Catherine the nature photographer [GCV1]
William Porter: Raven [GCV1]
William Porter: The Natural Bridge [GCV1]
William Porter: Home, sweet home [GCV1]
William Porter: Manzanita at Bryce Canyon [GCV1]
William Porter: Tent and shoes [GCV1]
William Porter: Stellar's Jay [GCV1]
William Porter: Lily pad pond [GCV2]
William Porter: Lily pads [GCV2]
William Porter: View from our camp site on North Rim [GCV2]
William Porter: Mary, Joan and Catherine at the North Rim [GCV2]
William Porter: Grand Canyon [GCV2]
William Porter: Clouds in the Canyon [GCV2]
William Porter: Vermillion Cliffs [GCV3]
William Porter: Little Colorado River at Navajo Bridge [GCV3]
William Porter: Colorado River and Grand Canyon [GCV3]
William Porter: Grand Canyon at sunset [GCV3]
William Porter: Unknown photographer sizing up the canyon [GCV3]
William Porter: As we start down the Bright Angel Trail [GCV3]
William Porter: Ranger Catherine on the Trail [GCV3]
William Porter: On the Bright Angel Trail [GCV3]
William Porter: Condor flying [GCV3]
William Porter: California Condor #281 [GCV3]
William Porter: Squirrel on the ledge [GCV3]