Copy letter from Robert William Frederick Harrison to Dr Dreyer 'Dear Sir, I now send you one more parcel of Herschel Mss. This is all we have been able to find, and I think we have now ransacked every corner. Though this is only one parcel, we find on examining its contents that there are 5 apparently separate items, so that I am in some hope that this by itself may complete the series. The contents are roughly thus (our numbers):- 1. General Index of 2500 Nebulae. 2. R A & P D of ditto. 3. General Catalogue of new Neblae. 4. Unlabelled -- apparently Messers Nebulae. 5. Bound book -- Catalogue of Nebulae by Caroline Herschel. I am sending per [?], and shall be glad to have your receipt and to learn whether you have all the MSS required.' 25 July 1910