calibration_files/inventory.csv
- Please rename this to collection_inventory.csv or even collection.csv

calibration_files/*.klblx
- Suggestion: to match the context product's Investigation_Area/name, change
  <name>New Horizons Kuiper Belt Extended Mission 1</name>
to
  <name>New Horizons Kuiper Belt Extended Mission</name>
- Suggestion: to match the context product's Instrument/name, change
  <name>LORRI</name> and
to
  <name>LONG RANGE RECONNAISSANCE IMAGER</name>

kem*/*.lblx
- All have
  <?xml-model href="https://pds.nasa.gov/pds4/img/v1/PDS4_IMG_1J00_1900.sch"
    ...
    https://pds.nasa.gov/pds4/img/v1/PDS4_IMG_1J00_1900.xsd"
but that version doesn't exist. Probably replace those with
  PDS4_IMG_1J00_1890
- Suggestion: to match the context product's Instrument/name, change
  <name>LORRI</name> and
  <name>Long Range Reconnaissance Imager (LORRI) for New Horizons</name>
to
  <name>LONG RANGE RECONNAISSANCE IMAGER</name>
- Suggestion: to match the context product's Instrument_Host/name, change
  <name>New Horizons Spacecraft</name>
to
  <name>NEW HORIZONS</name>
- Suggestion: to match the context products' Target/name, change
  <name>2020Ks11</name>
  <name>Ngc3532</name>
  <name>Cosmic Background</name>
  <name>Asteroid 486958 (2014 Mu69)</name> and
  <name>Arrokoth</name>
to
  <name>2020 KS11</name>
  <name>NGC 3532</name>
  <name>Cosmic Background Radiation</name>
  <name>(486958) 2014 MU69</name>
- Only the firat Array_2D_Image has a corresponding disp:Display_Settings.
The other two, error and quality, need it for orientation as well.

kem2_cal/collection.lblx
kem2_raw/collection.lblx
- Since many children labels reference these, add lid_references to
  urn:nasa:pds:context:target:astrophysical.cosmic_background
  urn:nasa:pds:context:target:dust.dust
  urn:nasa:pds:context:target:planet.saturn
  urn:nasa:pds:context:target:star_cluster.ngc_3532
  urn:nasa:pds:context:target:trans-neptunian_object.2020_ks11

kem*/overview.lblx
- Use https for URLs, so this
  schemaLocation="http://pds.nasa.gov/pds4/pds/v1 http://pds.nasa.gov/pds4/pds/v1/PDS4_PDS_1J00.xsd
should be
  schemaLocation="http://pds.nasa.gov/pds4/pds/v1 https://pds.nasa.gov/pds4/pds/v1/PDS4_PDS_1J00.xsd