EntityQ1447668· pop 5· linked from 5 articlesFranz KalckhoffSign in to saveGerman author, chemist and philatelist (1860-1955)ConnectionsphilatelyEntitypostal stationeryEntityRoll of Distinguished PhilatelistsEntityCategories1860 births1955 deathsCulture articles needing translation from German WikipediaGerman philatelistsRecipients of the Lindenberg MedalSignatories to the Roll of Distinguished Philatelists