The Leeds museum wants the blasters to be part of the UK's national collection of arms and armour.
The bookmarks will be auctioned off to help a school in Zimbabwe.
Zbigniew Lasek was given a life sentence for the crime in Halifax.
A couple from Lincolnshire say it was "disturbing" how much was known about their online activity.
Council chiefs want to develop the area around Kirklees Park where the legendary outlaw is said to be buried.
Jodie Broughton scores his eighth try in four games to help Catalans overcome stuttering Super League champions Leeds.
Three first half tries help Wakefield to victory against Super League strugglers Widnes at the Select Security Stadium.
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