|Alternative reference number||NLB/5 p325|
|Title||Copy letter from an unknown correspondent, to Messrs Dulau & Company|
|Date||20 October 1891|
|Description||'Please obtain for us with least possible delay: - |
Halphen's "Traité des fonctions élliptiques". Also get for us if possible Todhunter's History of Elasticity Vol II. Also please remember that you have received our instructions to pick up if possible Todhunter's History of the mathematical theories of attraction & Figures of the Earth'.