Two editions of the 'Spectator', the tenth and eleventh, were published
by Tonson in the year of Steele's death. These and the next edition,
dated 1739, were without the translations of the mottos, which appear,
however, in the edition of 1744. Notes were first added by Dr. Percy,
the editor of the 'Reliques of Ancient Poetry', and Dr. Calder. Dr. John
Calder, a native of Aberdeen, bred to the dissenting ministry, was for
some time keeper of Dr. Williams's Library in Redcross Street. He was a
candidate for the office given to Dr. Abraham Rees, of editor and
general super-intendent of the new issue of Chambers's Cyclopædia,
undertaken by the booksellers in 1776, and he supplied to it some new
articles. The Duke of Northumberland warmly patronized Dr. Calder, and
made him his companion in London and at Alnwick Castle as Private
Literary Secretary. Dr. Thomas Percy, who had constituted himself cousin
and retainer to the Percy of Northumberland, obtained his bishopric of
Dromore in 1782, in the following year lost his only son, and suffered
from that failure in eyesight, which resulted in a total blindness.

Having become intimately acquainted with Dr. Calder when at
Northumberland House and Alnwick, Percy intrusted to him the notes he
had collected for illustrating the 'Tatler', 'Spectator', and
'Guardian'. These were after-wards used, with additions by Dr. Calder,
in the various editions of those works, especially in the six-volume
edition of the 'Tatler', published by John Nichols in 1786, where
Percy's notes have a P. attached to them, and Dr. Calder's are signed
'Annotator.' The 'Tatler' was annotated fully, and the annotated
'Tatler' has supplied some pieces of information given in the present
edition of the 'Spectator'. Percy actually edited two volumes for R.
Tonson in 1764, but the work was stopped by the death of the bookseller,