[R-sig-Geo] Where is your John Snow's map in "Analysing Spatial Data in R: Why spatial data in R?" available?

[Hisaji ONO]

Hello.

 I found in your PDF file,
http://www.bias-project.org.uk/ASDARcourse/unit0_slides.pdf.

 In this document, you used interesting John Snow's
"Cholera" map.

Is this format ESRI's shapefile?

 Where is this file available?
 
Once I've created Snow's shapefile(available form this
site,
http://giswin.geo.tsukuba.ac.jp/teacher/murayama/sdam/download.html(sorry
in Japanese only)) from Dr. Tobler's original
data(http://www.ncgia.ucsb.edu/pubs/snow/snow.html) with
permission.



 Regards.