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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| Scharff, R.F. | 1923 | The squirrel in Ireland | Journal | Ir. Nat. | Details... |
| Watt, H.B. | 1923 | The American grey squirrel in Ireland | Journal | Ir. Nat. | Details... |
| Loewenthal, J.E. | 1924 | Squirrels near central area of Belfast | Journal | Ir. Nat. | Details... |
| Ruttledge, R.F. | 1924 | Note on the distribution of the squirrel in Ireland | Journal | Ir. Nat. | Details... |
| Moffat, C.B. | 1927 | The squirrel | Journal | Ir. Nat. J. | Details... |
| Stelfox, A.W. | 1927 | The grey squirrel spreads to Westmeath | Journal | Ir. Nat. J. | Details... |
| Middleton, A.D. | 1929 | The red squirrel in Ireland | Journal | Ir. Nat. J. | Details... |
| Anon. | 1931 | Review: 'The grey squirrel' by A.D. Middleton | Journal | Ir. Nat. J. | Details... |
| Henderson, J.A. | 1947 | Grey squirrel in Co. Fermanagh | Journal | Ir. Nat. J. | Details... |
| Jackson, J.S. | 1961 | Two records of grey squirrel, Sciurus carolinensis Gmelin, shot in Counties Armagh and Monaghan | Journal | Ir. Nat. J. | Details... |
| Nelson, E.C. | 1977 | Summer feeding of red squirrels, Sciurus vulgaris L., in County Derry | Journal | Ir. Nat. J. | Details... |
| Sleeman, D.P. | 1986 | Insect ectoparasites of Irish grey squirrels (Sciurus carolinensis Gmelin) | Journal | Ir. Nat. J. | Details... |
| Browne, V.E. | 1993 | Excursion: Palace Stables and Navan Fort, Armagh | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Ulster Wildlife Trust & Forest Service DANI | 1993 | Mammal survey of five species: Red Squirrel, Grey Squirrel, Pine Marten, Irish Hare and English Hare | Report | | Details... |
| Anderson, R. & Hughes, D. | 1995 | Recent spread of the grey squirrel, Sciurus carolinensis Gmelin, into Cos. Down and Londonderry | Journal | Ir. Nat. J. | Details... |
| Browne, V.E. | 1995 | Excursion: Breakfast at Belvoir | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Tangney, D.E. & McCann, H. | 1996 | Red squirrel swimming in Lower Lough Erne | Journal | Ir. Nat. J. | Details... |
| Smiddy, P. & Sleeman, D.P. | 1998 | More records of fleas (Siphonaptera) from Irish mammals and birds | Journal | Ir. Nat. J. | Details... |
| McComb, A.M.G. | 2004 | Raptor predation attempts on grey squirrels Sciurus carolinensis (Gmelin) | Journal | Ir. Nat. J. | Details... |
| Tangney, D.E. | Unknown | Distribution and habitat preferences of the red and grey squirrel in Northern Ireland | Ph.D. Thesis | | Details... |
40 references found.