}
        {%- elsif url contains "archive.org" -%}
            {%- assign link_text = '<a href="' | append: url | append: '">' | append: title | append: '<sup >Wayback</sup></a>' -%}
        {%- elsif url contains "gutenberg.org" -%}
            {%- assign link_text = '<a href="' | append: url | append: '">' | append: title | append: '<sup >Guten</sup></a>' -%}
        {%- elsif url contains "youtube.com" or url contains "youtu.be" -%}
            {%- assign link_text = '<a href="' | append: url | append: '