Introduction: the issue of duplicates.

The permanent preservation of objects in global custodianship is a captivating ideal that informs countless museums' corporate identities and governs collection guidelines as well as politics. Recent research has challenged the alleged perpetuity of collections and collected items, revealing their coherence as fragile and dependent on historically, politically and culturally specific conditions. Duplicates offer an instructive point of entry to explore the idea of collection permanence, museum politics, and the mobility of museum objects.

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Linus Pauling, Roger Hayward, and the Value of Visualizations. Linus Pauling's work was intrinsically linked to visualizations. While his use of three- and two-dimensional inscriptions has been the focus of much scholarly research, the production of visualizations remains a rather poorly studied subject.