These files are for the HRSS Extant Roundhouse Survey.
They include the Data Request Form, along with 11x17 and an 8-1/2x11 versions of the Extant Roundhouse Survey. The 11x17 version allows for simpler, more consolidated viewing on a computer, while the smaller version allows for printing at a larger font size on home printers not capable of the larger paper.
HRSS Roundhouse Data Request Form
Roundhouse Listing, 11 inches x 8.5 inches, Revised - Posted November 9, 2019
Roundhouse Listing, 11 inches x 17 inches, Revised - Posted November 9, 2019
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There are other free .pdf readers out there, but Adobe is the main free .pdf reader. Pdf's are the internet way to publish documents for all to read and you will find them everywhere on the web.