Whether the prosecution may introduce child pornography videos at trial that were not found on the defendant's devices, but found in an outside investigation?

QUESTIONS PRESENTED (1) Whether the prosecution may introduce child pornography videos at trial that were not found on the defendant’s devices, but found in an outside investigation? (2) Whether child erotica, found in the deleted space of a device, is relevant to knowledge of the child pornography found in the same deleted space of the device, as the Eighth Circuit Court of Appeals held, or if it is improper propensity evidence, as the Sixth Circuit has held?