I'm interested in the printer Christopher Barker for a few reasons.  Not 
only is Barker the "printer to the queenes maiestie" from the mid-1570's 
to the end of the century, but his patron is Sir Francis Walsingham, 
principal secretary of state during the '70's and '80's.  Barker is 
also (and relatedly) one of the most important printers of religious 
documents in the period (he had a monopoly on the production of Geneva 
Bibles in the period, for instance).  
<p>
Barker's publications, as some of his imprints state, are printed "in 
Paules Churchyard at the signe of the Tygers head."  The tiger's head is 
Walsingham's device, and I thought it would be interesting to find out 
who else included a reference to the "Tygers head" in their imprint.  
Of course, Walsingham could have been involved in the patronage of any 
number of printing ventures which do not refer to his device in 
their imprint, but anyone citing the "Tygers head" would be advertising 
a connection with Walsingham.
<p>
Using iw tiger#, I found only five entries from 1560-1600, all in the 
1580's.  These are all religious documents--4 collections of sermons and 
the Heidelberg Catechism--printed by four different printers--Thomas 
Dawson, Joseph Barnes, Thomas East, and Robert Waldegrave.  Each of the 
imprints states that the printing was "for Tobie Cooke."  
<p>
Under iw tyger#, I found nine (non-Christopher Barker) entries, again all 
in the 1580's.  Again these are all religious documents--sermons, 
catechisms, anti-papist pamphlets--produced by various printers--Joseph 
Barnes, John Windal, and Thomas Dawson--for Tobie Cooke.
<p>
Now I just have to find out who Tobie Cooke was.
<p>
I also thought it would be interesting to find out how many different 
printers claimed to be "printer to the queenes maiestie" during 
Elizabeth's reign.  
<p>
All entries that come up using iw queen# are variations on the "printer 
to the queenes maiesties" theme.  These variations include:<blockquote>  
	3 entries in 1559--printed either by "Richard Jugge", or "Richard 
Jugge and John Cawood"<p>  
	43 entries in 156#--printed either by Jugge, Cawood, or Jugge and 
Cawood<P>
	90 entries in 157#--printed either by Jugge, Cawood, or Barker<P>
	120 entries in 158#--all printed by Barker except one item 
printed by Jugge's widow<P>
	116 entries in 159#--printed either by Christopher Barker or Robert 
Barker<P>
	39 entries from 1600-03 all printed by Robert Barker</blockquote>

One last interesting fact is that Christopher Barker's imprints never 
include both "printer to the queenes maiestie" and a reference to 
Walsingham's "Tygers head."