Museums, Accessioning or De-accessioning

Why a major Canadian art gallery would sell 20 works by a 
Group of Seven master
(Jessica Wong, CBC News; May 29, 2019)
https://www.cbc.ca/news/entertainment/deaccessioning-background-1.5151239

Introduction to Museum collections documentation standards

(CCI/ICC CHIN/RIP, YouTube; November 6, 2018)

The Ethics of De-accessioning

(Leigh Grinstead, YouTube; September 9, 2011)

Behind the scenes at the DIA:  Part 2 

(Detroit Institute of Arts, YouTube; April 25, 2011)