diff --git a/armour/helmet/coif.base.LICENSE b/armour/helmet/coif.base.LICENSE
new file mode 100644
index 000000000..93df0f003
--- /dev/null
+++ b/armour/helmet/coif.base.LICENSE
@@ -0,0 +1,3 @@
+# Original Artwork by SilverNexus, created for Crossfire in January 2021.
+license cc0
+licenseurl https://creativecommons.org/publicdomain/zero/1.0/
diff --git a/armour/helmet/coif.clsc.LICENSE b/armour/helmet/coif.clsc.LICENSE
new file mode 100644
index 000000000..5d8a1459f
--- /dev/null
+++ b/armour/helmet/coif.clsc.LICENSE
@@ -0,0 +1,3 @@
+# Original Artwork by SilverNexus, created for Crossfire in August 2021.
+license cc0
+licenseurl https://creativecommons.org/publicdomain/zero/1.0/
diff --git a/armour/helmet/helmetxray.base.LICENSE b/armour/helmet/helmetxray.base.LICENSE
new file mode 100644
index 000000000..c7a7aaab7
--- /dev/null
+++ b/armour/helmet/helmetxray.base.LICENSE
@@ -0,0 +1,3 @@
+# Original artwork by SilverNexus, created for Crossfire in November 2013.
+license cc0
+licenseurl https://creativecommons.org/publicdomain/zero/1.0/
diff --git a/armour/shield/holyshield.base.LICENSE b/armour/shield/holyshield.base.LICENSE
new file mode 100644
index 000000000..e173c6560
--- /dev/null
+++ b/armour/shield/holyshield.base.LICENSE
@@ -0,0 +1,3 @@
+# Original artwork by SilverNexus, referenced from the previous holy shield image (as of August 2021, now the clsc image). Created in March 2013.
+license cc0
+licenseurl https://creativecommons.org/publicdomain/zero/1.0/
diff --git a/armour/shield/kite_shield.base.LICENSE b/armour/shield/kite_shield.base.LICENSE
new file mode 100644
index 000000000..daac67d8c
--- /dev/null
+++ b/armour/shield/kite_shield.base.LICENSE
@@ -0,0 +1,3 @@
+# Original artwork by SilverNexus, created for Crossfire in November 2019.
+license cc0
+licenseurl https://creativecommons.org/publicdomain/zero/1.0/
diff --git a/crafting/Tools/file.base.LICENSE b/crafting/Tools/file.base.LICENSE
new file mode 100644
index 000000000..68142111d
--- /dev/null
+++ b/crafting/Tools/file.base.LICENSE
@@ -0,0 +1,3 @@
+# Original artwork by SilverNexus, created for Crossfire in October 2020.
+license cc0
+licenseurl https://creativecommons.org/publicdomain/zero/1.0/
diff --git a/flesh/goblin/goblin_corpse.base.LICENSE b/flesh/goblin/goblin_corpse.base.LICENSE
new file mode 100644
index 000000000..34bdb682a
--- /dev/null
+++ b/flesh/goblin/goblin_corpse.base.LICENSE
@@ -0,0 +1,3 @@
+# Derived by SilverNexus from the human corpse image, also by SilverNexus. Created for Crossfire in April 2021.
+license cc0
+licenseurl https://creativecommons.org/publicdomain/zero/1.0/
diff --git a/flesh/human/corpse.base.LICENSE b/flesh/human/corpse.base.LICENSE
new file mode 100644
index 000000000..ba886d411
--- /dev/null
+++ b/flesh/human/corpse.base.LICENSE
@@ -0,0 +1,3 @@
+# Original artwork by SilverNexus, created for Crossfire April 2021. Goblin and zombie corpses are derived from this.
+license cc0
+licenseurl https://creativecommons.org/publicdomain/zero/1.0/
diff --git a/flesh/misc/zombie_corpse.base.LICENSE b/flesh/misc/zombie_corpse.base.LICENSE
new file mode 100644
index 000000000..34bdb682a
--- /dev/null
+++ b/flesh/misc/zombie_corpse.base.LICENSE
@@ -0,0 +1,3 @@
+# Derived by SilverNexus from the human corpse image, also by SilverNexus. Created for Crossfire in April 2021.
+license cc0
+licenseurl https://creativecommons.org/publicdomain/zero/1.0/
diff --git a/food/bag_popcorn.base.LICENSE b/food/bag_popcorn.base.LICENSE
new file mode 100644
index 000000000..18adad0dd
--- /dev/null
+++ b/food/bag_popcorn.base.LICENSE
@@ -0,0 +1,3 @@
+# Original artwork by SilverNexus, referencing clsc faceset bag_popcorn. Created for Crossfire in November 2012, and edited numerous times to actually look right.
+license cc0
+licenseurl https://creativecommons.org/publicdomain/zero/1.0/
diff --git a/food/ch_burger.base.LICENSE b/food/ch_burger.base.LICENSE
new file mode 100644
index 000000000..74c50aa6d
--- /dev/null
+++ b/food/ch_burger.base.LICENSE
@@ -0,0 +1,3 @@
+# Original artwork by SilverNexus, created for Crossfire in November 2012.
+license cc0
+licenseurl https://creativecommons.org/publicdomain/zero/1.0/
diff --git a/food/coffee.base.LICENSE b/food/coffee.base.LICENSE
new file mode 100644
index 000000000..74c50aa6d
--- /dev/null
+++ b/food/coffee.base.LICENSE
@@ -0,0 +1,3 @@
+# Original artwork by SilverNexus, created for Crossfire in November 2012.
+license cc0
+licenseurl https://creativecommons.org/publicdomain/zero/1.0/
diff --git a/food/coffee_empty.base.LICENSE b/food/coffee_empty.base.LICENSE
new file mode 100644
index 000000000..74c50aa6d
--- /dev/null
+++ b/food/coffee_empty.base.LICENSE
@@ -0,0 +1,3 @@
+# Original artwork by SilverNexus, created for Crossfire in November 2012.
+license cc0
+licenseurl https://creativecommons.org/publicdomain/zero/1.0/
diff --git a/inorganic/fix_mercury.base.LICENSE b/inorganic/fix_mercury.base.LICENSE
new file mode 100644
index 000000000..c421dc8fe
--- /dev/null
+++ b/inorganic/fix_mercury.base.LICENSE
@@ -0,0 +1,3 @@
+# Original artwork by SilverNexus, referencing clsc fixed mercury image. Created for Crossfire in November 2012.
+license cc0
+licenseurl https://creativecommons.org/publicdomain/zero/1.0/
diff --git a/inorganic/true_lead.base.LICENSE b/inorganic/true_lead.base.LICENSE
new file mode 100644
index 000000000..0243542a6
--- /dev/null
+++ b/inorganic/true_lead.base.LICENSE
@@ -0,0 +1,3 @@
+# Original artwork by SilverNexus, referencing clsc block of true lead. Created for Crossfire in November 2012.
+license cc0
+licenseurl https://creativecommons.org/publicdomain/zero/1.0/
diff --git a/jewel/nugget_lar.base.LICENSE b/jewel/nugget_lar.base.LICENSE
new file mode 100644
index 000000000..9001cc40f
--- /dev/null
+++ b/jewel/nugget_lar.base.LICENSE
@@ -0,0 +1,3 @@
+# Original artwork by SilverNexus, created for Crossfire in October 2013.
+license cc0
+licenseurl https://creativecommons.org/publicdomain/zero/1.0/
diff --git a/jewel/nugget_sma.base.LICENSE b/jewel/nugget_sma.base.LICENSE
new file mode 100644
index 000000000..9001cc40f
--- /dev/null
+++ b/jewel/nugget_sma.base.LICENSE
@@ -0,0 +1,3 @@
+# Original artwork by SilverNexus, created for Crossfire in October 2013.
+license cc0
+licenseurl https://creativecommons.org/publicdomain/zero/1.0/
diff --git a/misc/blackfirebullet.base.LICENSE b/misc/blackfirebullet.base.LICENSE
new file mode 100644
index 000000000..eaf2bb757
--- /dev/null
+++ b/misc/blackfirebullet.base.LICENSE
@@ -0,0 +1,3 @@
+# Derived by SilverNexus from fireball image (also by SilverNexus). Created for Crossfire in February 2021.
+license cc0
+licenseurl https://creativecommons.org/publicdomain/zero/1.0/
diff --git a/monster/animal/bird_gen.base.LICENSE b/monster/animal/bird_gen.base.LICENSE
new file mode 100644
index 000000000..963367c25
--- /dev/null
+++ b/monster/animal/bird_gen.base.LICENSE
@@ -0,0 +1,3 @@
+# Original artwork by SilverNexus. Created for Crossfire in May 2016.
+license cc0
+licenseurl https://creativecommons.org/publicdomain/zero/1.0/
diff --git a/monster/giant/giant_gen.base.LICENSE b/monster/giant/giant_gen.base.LICENSE
new file mode 100644
index 000000000..06d64ca1e
--- /dev/null
+++ b/monster/giant/giant_gen.base.LICENSE
@@ -0,0 +1,3 @@
+# Original artwork by SilverNexus, referencing clsc hill giant generator. Created for Crossfire in November 2012.
+license cc0
+licenseurl https://creativecommons.org/publicdomain/zero/1.0/
diff --git a/monster/goblin/kobold_gen.base.LICENSE b/monster/goblin/kobold_gen.base.LICENSE
new file mode 100644
index 000000000..2f7a412e5
--- /dev/null
+++ b/monster/goblin/kobold_gen.base.LICENSE
@@ -0,0 +1,3 @@
+# Original artwork by SilverNexus, referencing clsc kobold generator. Created for Crossfire in February 2021.
+license cc0
+licenseurl https://creativecommons.org/publicdomain/zero/1.0/
diff --git a/monster/goblin/ogre_gen.base.LICENSE b/monster/goblin/ogre_gen.base.LICENSE
new file mode 100644
index 000000000..fbd6fdd21
--- /dev/null
+++ b/monster/goblin/ogre_gen.base.LICENSE
@@ -0,0 +1,3 @@
+Original artwork by SilverNexus, referencing clsc ogre generator. Created for Crossfire in October 2012.
+license cc0
+licenseurl https://creativecommons.org/publicdomain/zero/1.0/
diff --git a/potion/bag_empty.base.LICENSE b/potion/bag_empty.base.LICENSE
new file mode 100644
index 000000000..06554e14f
--- /dev/null
+++ b/potion/bag_empty.base.LICENSE
@@ -0,0 +1,3 @@
+# Original artwork by SilverNexus. Created for Crossfire in November 2012.
+license cc0
+licenseurl https://creativecommons.org/publicdomain/zero/1.0/
diff --git a/spell/Bullet/Fire/firebullet.base.LICENSE b/spell/Bullet/Fire/firebullet.base.LICENSE
new file mode 100644
index 000000000..652500758
--- /dev/null
+++ b/spell/Bullet/Fire/firebullet.base.LICENSE
@@ -0,0 +1,3 @@
+# Original artwork by SilverNexus. Created on a whim, but never used for anything in 2016, contributed into Crossfire in February 2021.
+license cc0
+licenseurl https://creativecommons.org/publicdomain/zero/1.0/
diff --git a/weapon/bow/compositebow.base.LICENSE b/weapon/bow/compositebow.base.LICENSE
new file mode 100644
index 000000000..4d91b30c2
--- /dev/null
+++ b/weapon/bow/compositebow.base.LICENSE
@@ -0,0 +1,3 @@
+# Original artwork by SilverNexus. Created for Crossfire in November 2020.
+license cc0
+licenseurl https://creativecommons.org/publicdomain/zero/1.0/
diff --git a/weapon/sword/punch_dagger.base.LICENSE b/weapon/sword/punch_dagger.base.LICENSE
new file mode 100644
index 000000000..8c21a94ff
--- /dev/null
+++ b/weapon/sword/punch_dagger.base.LICENSE
@@ -0,0 +1,3 @@
+# Original artwork by SilverNexus, created for Crossfire in August 2021.
+license cc0
+licenseurl https://creativecommons.org/publicdomain/zero/1.0/