2025-10-172025-11-172025-10-172025-11-17https://openaccess.ircica.org/handle/123456789/2633510 black and white negativesUlagay, İbrahim Ethem, 1880-1943Halil Ethem Bey Mansion (Beykoz)-İstanbulWaterfront mansions (Beykoz)-İstanbulSeaside architecture (Beykoz)-İstanbulMansions (Beykoz)-İstanbulGardens-İstanbulBoatsPeople-TurkeyÇubuklu'da Ulagaylar Yalısı (Halil Ethem Paşa Yalısı) ve bahçesinden çeşitli görüntülerPhotograph