.ibw samples are from TN003.zip.

polar-graphs-demo.pxp was distributed with IGOR Pro 5.04 as
  Examples/Graphing Techniques/Obsolete/Polar Graphs Demo.pxp

text3.ibw was provided by jbemis99 in issue #25:
https://github.com/AFM-analysis/igor2/issues/25
The 3-by-2 text wave contains columns (cat, dog, fish) and
(tiger, wolf, shark), as shown by the reporter in Igor Pro.
