Publishers
- High Museum Of Art, Atlanta 1
- Highgate Publications Ltd 1
- Hikoki Publications 7
- Hildesheimer & Faulkner 9
- Hillhead Publications 1
- Hillside Publishing 1
- Hippocrene Books 1
- His Majesty's Stationery Office 3
- Hisarlik Press 1
- Histoire & Collections 4
- Historic Buildings & Monuments Commission For England 1
- Historic England 1
- Historica Selecta 2
- Historical Aviation Album 2
- Historical Model Railway Society 2
- Historical Publications Ltd. 5
- History And Museums Divisions 1
- Hitchin Urban District Council 2
- HMSO 32
- Hodder & Stoughton 372
- Hodder & Stoughton Children's Books 3
- Hodder Children's Books 21
- Holiday House, New York 2
- Holland Studio Craft Ltd. 4
- Hollis & Carter 14
- Holt Rinehart & Winston 1
- Holywell Press 3
- Home Words Publishing Office 1
- Homewood Publishing Company 1
- Honda (u.K.) Ltd. 1
- Honey Dun Press 1
- Hong Kong Museum Of Art 1
- Hong Kong University Press 1
- Honno 1
- Hood & Co. Limited 1
- Horizons De France 1
- Houghton Mifflin and Company 2
- Houghton Mifflin Company 7
- Houghton Mifflin Company Boston 1
- Houghton Mifflin Harcourt 1
- Houghton, Osgood And Company 1
- Houlston & Sons 2
- Houlston and Stoneman 1
- Howard Baker 99
- Howard Baker Press 76
- Howell Press 1
- Howland Associates 1
- HSW Print 2
- Hth Publishers 1
- Hudson & Kearns 1
- Hudson Hills Press 1
- Hugh Broadbent 1
- Hugh Evans 6
- Hugh Evelyn 4
- Hugh Henry 1
- Hughes & Son 4
- Hughes A'I Fab 4
- Hughes and Son Ltd. 4
- Hughes Griffin Press 2
- Hull City Museums 1
- Hull University Press 1
- Hulton Press 3
- Hulton Press Ltd. 12
- Humana Press 1
- Humber Paddle Steamer Group 1
- Humboldt Books 1
- Humphrey Milford 176
- Humphrey Toulmin 1
- Hungarian Technical Publishers 1
- Hunkydory Designs 2
- Hunter College Of The City University Of New York 1
- Hurst 1
- Hurst & Blackett 2
- Hurst & Blackett Ltd. 2
- Hurst & Co 1
- Hurtwood Press 1
- Hutchinson 20
- Hutchinson & Co. 10
- Hutchinson & Co. Ltd 26
- Hutchinson Australia 1
- Hutchinson Children's Books 2
- Hutchinson Education 1
- Hutchinson Junior Books 2
- Hutchinson Junior Books Ltd 1
- Hutchinson of London 8
- Hutchinson University Library 1
- Hutchinson's Books for Young People 9
- Hutchinson's Juvenile Publications 1
- Hutchinson's Scientific And Technical Publications 1
- Hutchinson's Universal Book Club 1
- Hyde Park Books Ltd 1
- Hyde Park Group Plc 1
- Hyperion 1
- Hythe Borough Council 1
- I. Foulkes 4
- I. Harding 1
- I. Murray 1
- I.B. Tauris & Co. Ltd. 6
- I.G.S. Marine Publishers 1
- I.T. Hinton 2