Shakespeare's sonnets
The primary source of Shakespeare’s sonnets is a quarto published in 1609 titled "Shakespeare’s Sonnets." It contains 154 sonnets, which are followed by the long poem "A Lover's Complaint". Thirteen copies of the quarto have survived in fairly good shape from the 1609 edition, which is the only edition; there were no other printings. There is evidence in a note on the title page of one of the extant copies that the great Elizabethan actor Edward Alleyn bought a copy in June 1609 for one shilling.
Hamnet Shakespeare
Michael Wood suggests in "In Search of Shakespeare" that sonnet 33 might have nothing to do with the so-called "Fair Youth" sonnets, that it alludes to the death of the poet's son, Hamnet in 1596 at age 11, and that there is an implied pun on ""sun"" and ""son"": ""Even so my sun one early morn did shine, with all triumphant splendour on my brow; but out, alack, he was but one hour mine, the region cloud hath mask'd him from me now"". If this is the case the link of sonnet 33 with sonnet 34, sonnet 35 and sonnet 36 would be entirely coincidental and spurious. Note that in sonnet 33 (1) there is no overt "you" or "thou" (contrary to most of the sonnets and in particular to sonnets 34, 35 and 36 which all three use "thou") and (2) there is no mention of the supposed "fault" committed by the addressee towards the poet (as in sonnets 34 and 35) nor of the supposed "guilt" borne by the poet which may affect the addressee's reputation (as in sonnet 36).