“The Tower of Babel,” Pieter Bruegel the Elder

Credits

I use the following images and icons on Ad Unum Datum with gratitude:

Public Domain

Permissively Licensed

  • "" An email icon kindly released for free use (without a requirement of attribution) from Web Designer Depot
  • "" A chat icon kindly released for free use (without a requirement of attribution) from Finest Graphics
  • Several security-related icons kindly released for free use (with an expectation of attribution) from TrySoda (cf. IconFinder, which notes the “Free for commercial use (Include link to authors website)” license terms):
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  • "" A microphone icon kindly released for free use from Morning Train.