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This arXiv submission is posted primarily to make available some additionalmaterial to what we prepared for the Derek Memorial article published in theNotices of the AMS. We start (with the permission of the AMS) with the text ofour submission close to the final published version (which you can get online.After that we include some autobiographical notes that Derek dictated to LouisaBarnsley (whom we thank) during his final illness. Finally some unpublishednotes Derek wrote on the history of his seminal monographs with Bratelli. Wethank Marion Robinson for permission and encouragement to post these items.

Remembrances of Derek William Robinson (25 June 1935 - 31 August 2021)