Subseries 2: Project Records: consists of engineering, forestry, wildlife/fish & game reports, property assessments, engineering drawings, site specifications, elevations, survey maps, project cost estimates, product pamphlets, work schedules and inventories.Early property assessments included in the collection were generally favorable, concluding that the site was well-suited to its contemporary function as a summer camp. Documents pertaining to the period during which Fallingwater was actually constructed include estimates and pamphlets related to upholstery and bathrooms, as well as the gatelodge built on the property, though other related documents regarding the construction of the home can be found in the correspondence. Site specifications also include those for the Visitors Center, built after the house was reconceived as a museum.