1. Petrology, origin and deposition of the highest Lower Old Red Sandstone of Shropshire, England;Allen;J. sedim. Petrol.,1962
2. Studies in fluviatile sedimentation: six cyclothems from the Lower Old Red Sandstone, Anglo-Welsh Basin;Allen;Sedimentology,1964
3. Upper Old Red Sandstone (Farlovian) palaeogeography in South Wales and the Welsh Borderland;Allen;J. sedim. Petrol.,1965
4. Sedimentation and palaeogeography of the Old Red Sandstone of Anglesey, North Wales;Allen;Proc. Yorks. geol. Soc.,1965
5. Source rocks of the Lower Old Red Sandstone: exotic pebbles from the Brownstones, Ross-on-Wye, Hereford and Worcester;Allen;Proc. Geol. Ass.,1974