List of titles with their Number and their 1st published dates.
Some books were subsequently re-issued with slightly different titles.
For example, the Observer's Books British Birds became The Observer's Book of Birds.
1 The Observer's Book of (British) Birds
2 The Observer's Book of (British) Wild Flowers
3 The Observer's Book of (British) Butterflies
4 The Observer's Book of Trees (and Shrubs of the British Isles)
5 The Observer's Book of (British) Wild Animals (of the British Isles)
6 The Observer's Book of FreshWater Fishes (of the British Isles)
7 The Observer's Book of (British) Grasses Sedges & Rushes
8 The Observer's Book of Dogs
9 The Observer's Book of Horses and Ponies
10 The Observer's Book of (British) Geology
11. AIRCRAFT
12. BRITISH FERNS 1949
13 (BRITISH) ARCHITECTURE 1949
14 THE LARGER BRITISH MOTHS 1952
15. SHIPS 1952
16. MUSIC 1953
17. COMMON BRITISH INSECTS AND SPIDERS 1953
18. BRITISH BIRDS' EGGS 1954
19. COMMON FUNGI 1954
20. MOSSES AND LIVERWORTS 1955
21. AUTOMOBILES 1955
22. WEATHER 1955
23. RAILWAYS LOCOMOTIVES OF BRITAIN 1955
24. POND LIFE 1956
25. GARDEN FLOWERS 1957
26. PAINTING AND GRAPHIC ART 1958
27. CACTI AND OTHER SUCCULENTS 1958
28. SEA FISHES 1958
29. FLAGS 1959
30. CATS 1959
31. SEA AND SEASHORE 1962
32. ASTRONOMY 1962
33. LICHENS 1963
34. MODERN ART 1964
35. FURNITURE 1964
36. OLD ENGLISH CHURCHES 1965
37. SCULPTURE 1966
38. BASIC AIRCRAFT-CIVIL 1967
39. BASIC AIRCRAFT-MILITARY 1967
40. COMMERCIAL VEHICLES 1967
41. HERALDRY 1967
42. POSTAGE STAMPS 1967
43. CATHEDRALS 1972
44. FLOWERING TREES AND SHRUBS [ FOR GARDENS ] 1972
45. ZOO ANIMALS 1972
46. HOUSE PLANTS 1972
47. ASSOCIATION FOOTBALL 1972 SOCCER 1978
48. MANNED SPACEFLIGHT 1972
49. CRICKET 1973
50. LONDON 1973