King Penguins
| K1 | Barclay-Smith, Phyllis | British Birds on Lake River and Stream | 1939 |
| K2 | Ramsbottom, John | Book of Roses | 1939 |
| K3 | Mitchell, Charles | A Book of Ships | 1941 |
| K4 | Kitzinger, Ernst | Portraits of Christ | 1941 |
| K5 | Gombrich, E.H. | Caricature | 1941 |
| K6 | Duncan, F. Martin | British Shells | 1943 |
| K7 | Laver, James | Fashions and Fashion Plates | 1943 |
| K8 | Winter, Carl | Elizabethan Miniatures | 1943 |
| K9 | Rowlandson, T. | Microcosm of London | 1943 |
| K10 | MacLagen, Eric | Bayeux Tapestry | 1943 |
| K11 | Norman, J.R. | Fishes of Britain's Rivers and Lakes | 1943 |
| K12 | Beerbohm, Max | Poets' Corner | 1943 |
| K13 | Ramsbottom, John | Edible Fungi | 1943 |
| K14 | Stoker, Fred | Book of Lilies | 1944 |
| K15 | Stephenson, T.A. | Seashore Life and Pattern | 1944 |
| K16 | Tomlinson, R.R. | Children as Artists | 1945 |
| K17 | Pevsner, Nikolaus | Leaves of Southwell | 1945 |
| K18 | Riley, Norman | Some British Moths | 1945 |
| K19 | Barclay-Smith, Phyllis | Garden Birds | 1945 |
| K20 | Leeper, Janet | English Ballet | 1944 |
| K21 | Carrington, Noel | Popular Art in Britain | 1945 |
| K22 | Wagner, Anthony | Heraldry in England | 1946 |
| K23 | Ramsbottom, John | Poisonous Fungi | 1945 |
| K24 | Lockley, R.M. | Birds of the Sea | 1945 |
| K25 | Woolley, Leonard | Ur: The First Phases | 1947 |
| K26 | White, Gwen | Book of Toys | 1946 |
| K27 | Williams, Iolo | Flowers of Marsh and Stream | 1946 |
| K28 | Symonds, R.W. | Book of English Clocks | 1947 |
| K29 | Salisbury, E.J. | Flowers of the Woods | 1947 |
| K30 | Berwick, Thomas | Wood Engravings | 1947 |
| K31 | James, Philip | English Book Illustrations 1800-1900 | 1947 |
| K32 | Dickens, Charles | A Christmas Carol | 1946 |
| K33 | Rice, David Talbot | Russian Icons | 1947 |
| K34 | Gloag, John | English Tradition in Design | 1947 |
| K35 | Bristowe, W.S. | Book of Spiders | 1947 |
| K36 | Gibbs-Smith, Charles | Ballooning | 1948 |
| K37 | Gilmour, John | Wild Flowers of the Chalk | 1947 |
| K38 | Ettlinger, R.D. | Compliments of the Season | 1947 |
| K39 | Barlow, T.D. | Woodcuts of Albrecht Durer | 1948 |
| K40 | Leeper, Janet | Edward Gordon Craig | 1948 |
| K41 | Ford, E.B. | British Butterflies | 1951 |
| K42 | Laver, James | British Military Uniforms | 1948 |
| K43 | Rowntree, Kenneth | Prospect of Wales | 1948 |
| K44 | Blunt, Wilfred Jasper | Tulipomania | 1950 |
| K45 | Tanner, L.E. | Unknown Westminster Abbey | 1948 |
| K46 | Collie, George | Highland Dress | 1948 |
| K47 | Smith, Malcolm | British Reptiles and Amphibia | 1949 |
| K48 | Fairbank, Alfred | Book of Scripts | 1949 |
| K49 | Taylor, Geoffrey | Some British Beetles | 1949 |
| K50 | Christensen, Erwin O. | Popular art in the United States | 1949 |
| K51 | Edward Bawden | Life in English Village | 1949 |
| K52 | Jones, Barbara | Isle of Wight | 1950 |
| K53 | Grigson, Geoffrey | Flowers of the Meadow | 1950 |
| K54 | Webster, T.B.L. | Greek Terracottas | 1951 |
| K55 | Piper, John Egerston | Romney Marsh | 1950 |
| K56 | Barman, Christian | Early British Railways | 1950 |
| K57 | Richards, Paul | Book of Mosses | 1950 |
| K58 | Barclay-Smith, Phyllis | Book of Ducks | 1951 |
| K59 | Williamson, Reginald Ross | Ackermann's Cambridge | 1951 |
| K60 | Chadwick, Paxton | Crown Jewels | 1951 |
| K61 | Speed, John | Atlas of Tudor England | 1951 |
| K62 | Cave, C.J.P. | Medieval Carvings in Exeter | 1953 |
| K63 | Seltman, Charles | Book of Greek Coins | 1952 |
| K64 | Burland, Cottie | Magic Books from Mexico | 1953 |
| K65 | Wooster, Nora | Semi-Precious Stones | 1953 |
| K66 | Hudson, W.H. | Birds of the Plata | 1952 |
| K67 | Lodge, G.E. | Mountain Birds | 1952 |
| K68 | Rackham, Bernard | Animals in Staffordshire Pottery | 1953 |
| K69 | Colvin, H.M. | Ackermann's Oxford | 1954 |
| K70 | Cowper, William | Diverting History of John Gilpin | 1953 |
| K71 | Davies, Nina | Egyptian Paintings | 1954 |
| K72 | Anderson, M.D. | Misericords | 1954 |
| K73 | Arlott, John | Picture of Cricket | 1955 |
| K74 | Shepheard, Peter | Woodland Birds | 1955 |
| K75 | Mann, James | Monumental Brasses | 1957 |
| K76 | Corbett, P.E. | Sculpture of the Parthenon | 1959 |