i. 10 August 1838 - Shrewsbury - Accounts. Enquiries about Reichenbach's exotic ferns.
ii. 26 April 1851 - Shrewsbury- Publications on lichens. Welwitzch's Lichens.
iii. 5 May 1851 - Shrewsbury - Lichen pamphlets to Mr. Darling. Dr. Greville's parcl.
iv. 16 May 1851 - Shrewsbury - Proposed exchange for Leighton's Angiocarpus Lichens and his Shropshire Rubi, for books. Asks about Schaerer's Lichenes Exsiccati; Schleicher's Lichens, Fries collection, Mougeot and Nestler. "When do you expect Eschweiler?"
v. 27 May 1851 - Shrewsbury - Has sent copies of the Rubi and asks for items in exchange. Suggests second series of Shropshire Brambles. Addresses needed. Publications. Greville parcel.
vi. 8 July 1851 - Shrewsbury - Has brought home from Wales a mass of lichens. (2 cwt in weight). Delay in Ray Society Publication. "New Series" of Brambles. Letter for Dr. Montague. (W.P.'s note accepts proposals on Brambles and Lichens.
vii. 8 August 1851 - Shrewsbury - Sends copies of his book (Ray Society) and asks for Mougeot and Nestler in return. Enquires when Welwitsch's Portugese Lichens will be distributed.
viii. 2 October 1851 - Shrewsbury - Wishes to examine books to see if he wants them. Lists 36 titles (W.P. has marked some with price.) Schaerer's Emumeratio. Mr. Tuckerman's address. Publications.
ix. 11 October 1851 - Shrewsbury - Has sent copies of 1st Fasc. Lichenes Britannica Exsiccati. Mr. Borrer. Publications. Parcels of plants from Mr. Lawson (Edinburgh).
x. 13 October 1851 - Shrewsbury - Price of Hoffman's Plantae Lichenosce.
xi. 16 October 1851 - Shrewsbury - As above. Return of unwanted books. Other booksellers' names wanted.
xii. 23 October 1851 0 Shrewsbury - About many publications.
xiii. 29 October 1851 - Shrewsbury - Publications. Dickson's Specimens.
xiv. 10 November 1851 - Shrewsbury - Forwards letter from W.C. Unwin. Wants W.P. to keep 6 copies of 1st Fasc. of Lichenes Britannica Exsiccati.
xv. 17 November 1851 - Shrewsbury - Sends lists of books kept or returned. Asks W.P. to send copy of Lichenes Britannica Exsiccati to James Bladon. Parcels for Babington, and Edinburgh and London Botanical Societies.
xvi. 4 December 1851 - Shrewsbury - Publications. His work at a standstill for need of papers in Usteri Annalen der Bot. which Mr. Borrer tells him is in Linn. Soc. Asks W.P. to enquire about possible loan.
xvii. 22 December 1851 - Shrewsbury - Asks that copies of Lichenes Exsiccati be sent to Montagne, Schaerer, Tuckermann. Again asks about Usteri Annalen.
xviii. 17 January 1852 - Shrewsbury - Asks that Lichenes Britannica Exsiccati be sent to Henslow. Thinking of 2nd Fasciculus and asks for list of those taking copies of 1st Fasciculus.
xix. 20 January 1852 - Shrewsbury - On list asked for above. Accounts. Schaerer's Exsiccati.
xx. 28 February 1852 - Shrewsbury - Accounts. Publications.
xxi. 10 March 1852 - Shrewsbury - Accounts. 2nd Fasc. Lichenes Exsiccati. (Notes by W.P. offers Usteri Annalen.).
xxii. 26 May 1852 - Shrewsbury - Advertising "Lichenes Exsiccati." Publications. Usteri Annalen. vexed about Davies on Lichens from Linn. Soc. Trans. Welwitsch's Lichens. Parcels by train and non-arrival of parcels sent to W.P. for Edinburgh Bot. Soc.
xxiii. 2 August 1852 - Shrewsbury - Asks whether Mougeot and Nestler have published any Fasculi after No. XII.
xxiv. 16 August 1852 - Shrewsbury - Long list of items requires: (16 items, W.P. has marked some.).
xxv. 1 September 1852 - Shrewsbury - Accounts. 3rdFasc. of Lichens in 2-3 weeks.
xxvi. 20 September 1852 - Shrewsbury - Accounts.
xxvii. 24 September 1852 - Shrewsbury - Accounts. Asks for Churchhill Babington's Lichens of the Himalayas in Hooker's Journal. Mougeot & Nestler - urgent.
xxviii. 25 September 1852 - Shrewsbury - (From W.P. Sending mid-summer accounts. Mougeot.).
xxix. 27 September 1852 - Shrewsbury - A long letter attempting to clear up problems between W.P. and W.A.L.
xxx. 18 October 1852 - Shrewsbury - 1852 - Payment to Richard Nightingale.
xxxi. 3 November 1852 - Shrewsbury - Third fasc. of Lichenes Britannica Exsiccati. Parcels for Henslow, Babington and Tuckerman. Returns Usteri's Annalen, etc. Mougeot & Nestler. Accounts. His Ray Society book. (W.P. has calculations noted on letter.).
xxxii. 12 November 1852 - Shrewsbury - His Lichenes Exsiccati.
xxxiii. 4 December 1852 - Shrewsbury - Parcel for Dr. E. M. Fries, Upsala (sic). Tuckerman has sent to W.P. for W.A.L. his "Lichens Exsiccati Americani."Welwitsch's Lichens of Spain and Portugal.
xxxiv. 6 December 1852 - Shrewsbury - Parcel for Fries.
xxxv. 7 December 1852 - Shrewsbury - Parcel for Fries.
xxxvi. 2 April 1853 - Shrewsbury - Sales of "Lichenes Britannica Exsiccati."
xxxvii. 8 September 1853 - Shrewsbury - Fasc. 2 of above.
xxxviii. 11 October 1853 - Shrewsbury - Lichenes Britannica Exsiccati. Parcels for Henslow, Bladon, Mougeot, Montagne and Nylander.
xxxix. 7 December 1853 - Shrewsbury - Refers to letter above. Fries is sending parcel of Lichens to W.P. for W.A.L.
xl. 12 September 1854 - Shrewsbury - Parcels for Mougeot, Houlton and Henslow. Fifth Fasc. of Lichenes Britannica Exsiccati. W.A.L.'s British Graphideae.
xli. 15 November 1854 - Shrewsbury - Lichenes Britannica Exsiccati Fasc. 6. Parcels for Borrer, Henslow, Piggot, Massalongo. Massalongo and Lenormand are sending parcels for W.A.L. via W.P. Wishes to see his work in W.P.'s catalogues.