American Art Pottery vessels, collection of seven USA, 20th century glazed ceramic 8 h × 4 dia in (20 × 10 cm) Collection is comprised of Grueby squat vase, Rookwood Production vase, Roseville blue Snowberry vase, Niloak Mission ware vase, pair of California Porcelain candlesticks, and a Pine Ridge vase with geometric design. Impressed manufacturer's mark to base, 'Grueby Faience Co. Boston USA GH'. Impressed manufacturer's mark to base of Rookwood vase 'Flame mark XXV 237'. Signature, 'Pine Ridge Sioux O. Cottier'. Signed to underside of candlesticks 'California Porcelain'. Impressed manufacturer's mark to underside of marbleized vase 'Niloak'. Raised manufacturer's mark 'Roseville U.S.A. IV-6'.