2. Nurseries, greenhouses, forestry, and horticultural enterprises, and the sale of the products of such uses, limited, however, to sale of products grown on the land described herein. 3. Recreation, including, but not limited to, camping, picnicking, boating, fishing, swimming, horseback riding, golf courses (excluding miniature golf), driving ranges, and other similar outdoor activities, whether operated commercially or privately. 4. Water conservation, water supply, flood and drainage control, and impoundment facilities. 5. Three single family dwellings not more than 40 feet in height and related outbuildings, facilities and access roads, whether or not occupied by grantor, on lots of not less than one acre, including such grading and removal of trees and shrubbery as may be desirable or necessary in connection therewith. Professional practice of medicine, dentistry, law, real estate or insurance sales, architecture, art or music instruction, engineering or land surveying, by an actual bona-fide resident of such dwelling is permitted. B. Uses, structures and acts under the temporary easement expressly prohibited: 1. No building or other structure, except as permitted in Paragraph IIA5 above, shall hereafter be erected or allowed to remain upon the land herein described, provided that buildings and structures existing at the date of execution hereof, and additions thereto which do not increase grade level floor area by more than one hundred percent shall be permitted. 2. No commercial or industrial use shall be commenced or allowed to continue, unless expressly permitted in (A) above or in any duly executed and recorded amendment hereof. 3. No sign, billboard, or other display shall be erected or allowed to remain on the property described herein, provided, that one sign of a size not greater than 25 square feet advertising the sale of the property or the products or activities available thereon may be erected adjacent to each separate public street upon which the land described herein has frontage.