Series
- J.E. Macdonnell collector's series138
- J.E. Macdonnell sea adventure library3
- J.E. Nixonwestwood collection of photographs3
- J.F.N. Murray map collection95
- J.G. Fichte-Gesamtausgabe der Bayerischen Akademie der Wissenschaften, III, 1-<2, 4-6 >1
- J.G.R. series10
- J.H. Gray lectures4
- J.K. Rowling's Wizarding world3
- J.K. Rowling's wizarding world4
- J.K. Walker lecture4
- J.M. Braga collection20
- J.M. Dent memorial lectures3
- J.P. Naik memorial lecture1
- J.P.R.S. report1
- J.R. Black special map collection2
- J.R. Jones memorial lecture1
- J.R.T. lecture1
- J.R.W. Purves memorial series20
- J.S. Cumpston map collection1
- J.S. Reprint1