Publishers
- Henry Thomas 2
- Henry Washbourn 1
- Henry Young & Sons 1
- Her Majesty's Stationery Office 14
- Herald Gravure 1
- Herald Printers (whitchurch) Ltd 1
- Herbert & Daniel 1
- Herbert Jenkins 6
- Herbert Jenkins Limited 5
- Herbert Jenkins Ltd. 5
- Herbert Joseph 1
- Herbert Joseph Limited 2
- Herbig 1
- Hercules Publishing House 1
- Herder & Co. 1
- Heritage Trust Of Lincolnshire 1
- Hermann 1
- Hermann & Cie. 1
- Hermann Schafftein 1
- Hermes House 1
- Herridge & Sons 1
- Hertfordshire Natural History Society 1
- Hertfordshire Publications 1
- Hickory House Press 1
- High Museum Of Art, Atlanta 1
- Hikoki Publications 7
- Hildesheimer & Faulkner 7
- Hillside Publishing 1
- His Majesty's Stationery Office 1
- Hisarlik Press 1
- Histoire & Collections 3
- Historica Selecta 1
- Historical Aviation Album 1
- Historical Model Railway Society 2
- Historical Publications Ltd. 6
- History Research 1
- Hitchin Historical Society 1
- Hitchin Urban District Council 2
- HMSO 35
- Hobby House Press 1
- Hodder & Stoughton 251
- Hodder & Stoughton Children's Books 1
- Hodder & Stoughton Limited 1
- Hodder Children's Books 20
- Holborn House 1
- Holiday House, New York 3
- Holland Studio Craft Ltd. 3
- Hollis & Carter 12
- Holt Rinehart & Winston 2
- Holywell Press 2
- Home Words Publishing Office 1
- Homewood Publishing Company 1
- Honda (u.K.) Ltd. 1
- Hong Kong Museum Of Art 1
- Honno 1
- Hood & Co. Limited 1
- Hooded Falcon Publications Limited 1
- Horace Cox 1
- Horizons De France 1
- Houghton Mifflin and Company 2
- Houghton Mifflin Company 8
- Houlston & Sons 2
- Houlston and Stoneman 1
- Howard Baker 87
- Howard Baker Press 66
- Howard Frisch 1
- HSW Print 1
- Hudson & Kearns 1
- Hudson Hills Press 2
- Hudson History 1
- Hugh Evans 6
- Hugh Evelyn 1
- Hugh Henry 1
- Hughes & Son 4
- Hughes A'I Fab 3
- Hughes and Son Ltd. 2
- Hughes Griffin Press 2
- Hull City Museums 2
- Hull Museum 1
- Hulton Press 2
- Hulton Press Ltd. 6
- Humana Press 1
- Humber Paddle Steamer Group 1
- Humboldt Books 1
- Humphrey Milford 134
- Humphrey Toulmin 1
- Hungarian Technical Publishers 1
- Hunkydory Designs 1
- Hurst 1
- Hurst & Blackett 2
- Hurst & Blackett Ltd. 2
- Hurst & Co 1
- Hurtwood Press 1
- Hutchinson 19
- Hutchinson & Co. 10
- Hutchinson & Co. Ltd 22
- Hutchinson Australia 1
- Hutchinson Children's Books 6
- Hutchinson Education 1
- Hutchinson Junior Books 1