I had a great time at the Cascadia conference this past weekend. I missed Friday, but got to spend all day Saturday teaching PowerShell to a great group of attendees. There were some great questions and interesting thoughts developed in both the Fundamentals class and the Tips and Tricks class.
I want to thank the organizers of the conference for having me out and especially to the attendees for my classes, most of whom spent all day with me.
To load the shell history, you can use Import-Clixml (path to the xml file) | add-history. After that Get-history will have all the commands we ran when we tried to work out the error handling for that web request.