John Gibney & Kate O’Malley 
Handover [PDF ebook] 
Dublin Castle and the British withdrawal from Ireland, 1922

This book illustrates the 1922 handover of power by the outgoing British administration to the Provisional Government of Ireland led by Michael Collins in early 1922. The handover fell between the Treaty split of January 1922 and the outbreak of the Civil War in June 1922 and is usually overshadowed by both. The book bridges this gap by telling a relatively unfamiliar but hugely important story.