MSDN - Explore the EWS Managed API 2.0
MSDN - Exchange 2013 - Public folder access with EWS in Exchange
Glen's Exchange Dev Blog - Create a folder under the Inbox if one doesn't existing using Powershell and the EWS Managed API
MSDN Blogs > EMEA Developer Support for Messaging Team Blog > PowerShell: Create folders in users' mailboxes
MSDN Blogs > EMEA Developer Support for Messaging Team Blog > PowerShell: Search mailbox for items of a particular message class (ItemClass)
MSDN Blogs > EMEA Developer Support for Messaging Team Blog > PowerShell: Search public folders for items of a particular message class (ItemClass)
MSDN Blogs > EMEA Developer Support for Messaging Team Blog > PowerShell: Merge mailbox folders
MSDN Blogs > EMEA Developer Support for Messaging Team Blog > PowerShell: Script to move items from one folder to another in a user's mailbox
The Exchange Team Blog - Use Exchange Web Services and PowerShell to Discover and Remove Direct Booking Settings
EighTwOne #821 - Removing Duplicate Items from a Mailbox
Glen's Exchange Dev Blog - EWS Managed API and Powershell How-To series Part 2 - Folders
TechNet Blogs » Bill Long's Exchange Blog » Accessing The Information Store From Powershell
Microsoft - Office Dev Center - EWS: How to delete a non-Well known folder in a mailbox I have full rights to? (MsgFolderRoot is the parent folder of Inbox.)