Web Science and Digital Libraries Research Group

In Where did the archive go? Part 1 , we provided some details about changes in the archive Library and Archives Canada . After they upgraded their replay system, we were no longer able to find 49 out of 351 mementos (archived web pages). In Part 2 , we focused on the movement of the National Library of Ireland (NLI). Mementos from NLI collection were moved from the European Archive to the Internet Memory Foundation (IMF) archive. Then, they were moved to Archive-It . We found that 192 mementos, out of 979, can not be found in Archive-It. In part 3 of this four part series, we focus on changes in the Public Record Office of Northern Ireland (PRONI) Web Archive . In October 2018, mementos in the PRONI archive were moved to Archive-It ( archive-it.org ). We discovered that 114 mementos, out of 469, can no longer be found in Archive-It (i.e., missing mementos). We refer to the archive from which mementos have moved as the "original archive" (i.e., PRONI archive), and we

I n the previous post , we provided some details about changes in the archive Library and Archives Canada . After they upgraded their web archive replay system, we were no longer able to find 49 out of 351 mementos  (archived web pages). In part 2 of this four part series, we focus on the movement of a collection from the National Library of Ireland (NLI). In May 2018, we discovered that 979 mementos from the NLI collection that were originally archived at the European Archive ( europarchive.org ) were moved to the Internet Memory Foundation archive ( internetmemory.org ). Then in September 2018, we found that the collection of mementos had been moved to Archive-It ( archive-it.org ). We found that 192 mementos, o ut of 979 , can not be found in  Archive-It (i.e., missing mementos). For example, the memento from  the European Archive : http:// collection.europarchive.org /nli/20141013204117/http://www.defense.gov/ has been moved to  the Internet Memory Foundation (IM