diff --git a/images/reference/bluetooth.svg b/images/reference/bluetooth.svg
new file mode 100644
index 00000000..ca2137da
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@@ -0,0 +1,58 @@
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diff --git a/images/reference/ibm.svg b/images/reference/ibm.svg
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diff --git a/images/reference/index.md b/images/reference/index.md
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| https://www.oath.com/brands/yahoo/ |
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| https://commons.wikimedia.org/wiki/File:Bitcoin.svg |
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| https://www.cloudflare.com/logo/ |
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| https://www.bluetooth.com/develop-with-bluetooth/marketing-branding/brand-guide-logos |
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| https://www-03.ibm.com/ibm/history/exhibits/logo/logo_8.html |
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| https://yammerassets.blob.core.windows.net/assets/sites/12/2014/07/Yammer_BrandIdentityGuidelines-1.pdf |
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diff --git a/images/reference/yammer.svg b/images/reference/yammer.svg
new file mode 100644
index 00000000..5c3f753a
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