From the record
“The geography of Fossil Creek required a series of tunnels, judged to be less expensive and easier to maintain than continuous flume through this area.”
Written record, HAER AZ-65-W survey. Machine-read text.
Surveyed by the federal HAER program as HAER AZ-65-W · the record runs 499 words · one of 63 surveyed structures published for this county.