John Constable: Toward a Complete Chronology. - Reed College

1830 Dec 20 Letter from J.C. in London to David Lucas in London. (JCC IV,
p. 338)
1830 Dec 29 Letter from J.C. in London to Leslie in London sent with an
advance copy of English Landscape by J.K. Fisher: "[I] send
you my second number of 'Landscape'—the first yet sent,
therefore it is maiden." (JCC III, p. 34; see also JCC IV, pp.
145, 169, 283, 338 and JCC VI, p. 309)
1830 end of year Issuing of a plate engraved by David Lucas after a small oil
study by J.C. of Old Sarum. (JCC V, p. 84)
1830 end of year J.C. and children return to London from Hampstead. (JCC V,
p. 127)
1830 or later Note from Charles Eastlake in London to J.C. in London, on
paper watermarked 1830. (JC: FDC, p. 209)
1830 Corrected proof of original title-page to English Landscape;
proofs of three other versions of title page of English
Landscape. (JCD, p. 7)
1830 poss. Note from Richard Westall in London to J.C. (JC: FDC, p. 311)
1830 poss. Note from J.C., possibly in Hampstead, to David Lucas in
London. (JCC IV, p. 380)
1830 after Note from Edwin Landseer to J.C. on paper watermarked
1830 to J.C. (JC: FDC, pp. 229-30)
1830 or 1831 Note from Wilkie in London, undated, on paper watermarked
1830, to J.C. in London. (JC: FDC, p. 316)
1831 A note on the back of a letter indicates that J.C. is to dine
beg. of year with the Fishers in London at the beginning of the year. (JCC
VI, p. 262)
1831 Is engaged in painting Salisbury Cathedral from the Meadows.
beg. of year (JCC VI, p. 262)
1831 Letter from Frank Howard in London to J.C. in London. (JC:
beg. of year FDC, pp. 219-20)