“Circular Bridge, 400 ft. above lower track” Postcard
“6607 Circular Bridge, 400 ft. above lower track, Mt. Lowe Railway, California – ‘On the Road of a Thousand Wonders'” Postcard.
Mount Lowe Preservation Society Inc. Collection 
“6607 Circular Bridge, 400 ft. above lower track, Mt. Lowe Railway, California – ‘On the Road of a Thousand Wonders'” Postcard.
