| 3950 | 267 | Thomas Purves Marwick | The history and construction of staircases | 1888 | B/06.5 | Marwic |
| 3952 | 5254 | H J Mason | Flint - the versatile stone | 1978 | B/05.4 | Mason, |
| 3954 | 3396 | H J Mason | Flint : the versatile stone | 1978 | B/05.4 | Mason, |
| 3955 | 8303 | James Mason | Medieval realms 1066-1500 | 1991 | E/64 | Mason, |
| 3956 | 3713 | J F A Mason et al | Stokesay Castle Shropshire | ? | B/27 | Stokes |
| 3957 | 4855 | Lancelot Mason | St. Michael & All Saints, Plumpton : appeal for ?1500 | ? | B/26.2 | Sussex |
| 3960 | 5134 | R T Mason | Framed buildings of England | ? | B/05.2 | Mason, |
| 3961 | 6933 | R T Mason | Framed buildings of England | ? | B/05.2 | Mason, |
| 3964 | 700 | R T Mason | Framed buildings of the Weald | 1964 | B/05.2 | Mason, |
| 3966 | 230 | R T Mason | Framed buildings of the Weald | 1969 | B/20 | Mason, |
| 3968 | 3412 | R T Mason | Bridge Cottage restoration appeal | 1975 | B/10.0 | Mason, |
| 3970 | 1554 | H J Massingham | The face of Britain : English downland | 1936 | E/05.1 | Massin |
| 3971 | 27 | H J Massingham | The face of Britain : English downland | 1936 | E/05.1 | Massin |
| 3972 | 7567 | H J Massingham | Country relics : an account of some old tools and properties once belonging to English craftsmen and husbandmen saved from destruction ? | 1939 | E/33.0 | Massin |
| 3973 | 8181 | H J Massingham | This plot of earth | 1944 | E/17.4 | Massin |
| 3975 | 8184 | H J Massingham | A mirror of England | 1985 | E/51 | Massin |
| 3976 | 2249 | A J Matthias | How to design & install plumbing | 1940 | WCP | Matthi |
| 3978 | 5402 | R Matton | Corfu | 1960 | E/11 | Matton |
| 3979 | 507 | edited by Allen Mawer | The chief elements used in English place-names. English Place-Name Society Volume I Part II | 1924 | E/13 | Mawer, |
| 3980 | 1557 | edited by Allen Mawer | The chief elements used in English place-names V1 Pt2 | 1924 | E/13 | Mawer, |
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