Marc B. Porter

Brooklyn Botanic Garden Corp. provides botanical research services. It teaches children and adults about plants and its importance in daily lives. The company was founded in 1897 and is headquartered in Brooklyn, NY.

Christie's, Inc. provides art auction house services. It offers auctions in areas of fine and decorative arts, jewellery, photographs, collectibles, and wines. The firm also offers private sales for its clients in all categories, with emphasis on post-war and contemporary, impressionist and modern, old masters, and jewellery. The company was founded in 1766 and is headquartered in New York, NY.

National Museum of American Jewish History engages in presenting educational programs and experiences that preserve, explore, and celebrate the history of Jews in America. Its programs include K-12 and Preschool, summer camp, kids and families, educators, adult learners, distance learning, sacred stories, and National Educators Institute. The company was founded in 1976 and is headquartered in Philadelphia, PA.

The New York Botanical Garden engages in the provision of museum of plants. It offers botanical garden, horticulture and garden history, conservation program, and historic landscape. The company was founded in 1891 and is headquartered in Bronx, NY.

Sotheby's operates as an art auction house. It operates through the following segments: Agency, SFS, and All Other. The Agency segment accepts property on consignment, and match sellers to buyers through the auction of private sale process. The SFS segment offers financing packages to clients who wish to obtain immediate access to liquidity from their art assets. The All Other segment comprises of advisory services, retail wine business, and brand licensing activities. The company was founded by Samuel Baker on March 11, 1744 and is headquartered in New York, NY.