EXHIBIT 21 ---------- SUBSIDIARIES OF REGISTRANT -------------------------- The registrant is Alco Standard Corporation ("Alco"), an Ohio corporation, which has no parent. The following sets forth information with respect to Alco's subsidiaries as of September 30, 1995. State or other jurisdiction of % Voting Securities incorporation or Subsidiary Owned (by whom) organization - - ---------- ------------------- ---------------- Alco Realty, Inc. (ARI) 100% Alco Delaware Alco Canada Realty, Inc. 100% ARI Canada 375347 British Columbia Ltd. 100% ARI Canada Alco Cash Management Company 100% Alco Delaware The Alco Standard Foundation 100% Alco Pennsylvania Alco-Texas Realty, Inc. 100% Alco Texas Chesterbrook Insurance Limited 100% Alco Bermuda MDR Corporation (MDR) 100% Alco Delaware AOP Brands, Inc. 100% AOS Delaware Alco Office Systems, Inc. (AOS) 100% MDR Delaware AOS North America, Inc. 100% AOS Delaware Alco Office Systems-Canada, Inc. 100% AOS North America, Inc. Canada Alco Capital Resource, Inc. 100% AOS Georgia Alco Office Products (UK) Plc (AOPUK) 100% AOS England Erskine House Group PLC (EHGPLC) 100% AOPUK England Erskine Limited 100% EHGPLC England Office Group, Inc. 100% AOS Delaware Office Products, Inc. 100% AOS Delaware Office World Trade, Inc. 100% AOS Florida Alco Standard Acquisition Capital Corporation 100% MDR Delaware Alco Standard Ltd. 100% MDR Delaware Alco Standard Petroleum Corporation 100% MDR Delaware Alco Venture Capital Company 100% MDR Delaware Unisource Worldwide, Inc. (UWI) 100% MDR Delaware Paper Corporation of North America (PCNA) 100% UWI Delaware Unisource Distribuidora, S.A. de C.V. 99% PCNA and 1% UWI Mexico 3813 Holdings, Ltd. 100% PCNA Canada Unisource Canada, Inc. 100% PCNA Canada Unisource Brands, Inc. 100% UWI Delaware Unisource Direct, Inc. 100% UWI Delaware Unisource International, Inc. 100% UWI Delaware Unisource Realty, Inc. 100% UWI Delaware Unisource Sales Corporation 100% UWI Delaware Partners Securities Company 100% Alco Delaware TDFC Corporation 100% Alco Delaware Upshur Coals Corporation 100% Alco West Virginia 1148189 Onatario Inc. 100% Alco Canada