diff --git a/assets/bookshelf/lang/en_us.json b/assets/bookshelf/lang/en_us.json
new file mode 100644
index 000000000..5feb83b8e
--- /dev/null
+++ b/assets/bookshelf/lang/en_us.json
@@ -0,0 +1,44 @@
+{
+    "_comment": "English Language File",
+
+    "_comment": "Moon Phases",
+    "moon.phase.full": "Full Moon",
+    "moon.phase.waxing.gibbous": "Waxing Gibbous",
+    "moon.phase.first.quarter": "First Quarter",
+    "moon.phase.waxing.crescent": "Waxing Crescent",
+    "moon.phase.new": "New Moon",
+    "moon.phase.waning.crescent": "Waning Crescent",
+    "moon.phase.last.quarter": "Last Quarter",
+    "moon.phase.waning.gibbous": "Waning Gibbous",
+
+    "_comment": "Months",
+    "time.bookshelf.month.january": "January",
+    "time.bookshelf.month.february": "February",
+    "time.bookshelf.month.march": "March",
+    "time.bookshelf.month.april": "April",
+    "time.bookshelf.month.may": "May",
+    "time.bookshelf.month.june": "June",
+    "time.bookshelf.month.july": "July",
+    "time.bookshelf.month.august": "August",
+    "time.bookshelf.month.september": "September",
+    "time.bookshelf.month.october": "October",
+    "time.bookshelf.month.november": "November",
+    "time.bookshelf.month.december": "December",
+
+    "_comment": "Days",
+    "time.bookshelf.day.sunday": "Sunday",
+    "time.bookshelf.day.monday": "Monday",
+    "time.bookshelf.day.tuesday": "Tuesday",
+    "time.bookshelf.day.wednesday": "Wednesday",
+    "time.bookshelf.day.thursday": "Thursday",
+    "time.bookshelf.day.friday": "Friday",
+    "time.bookshelf.day.saturday": "Saturday",
+
+    "_comment": "Commands",
+    "commands.bookshelf.loot_tables": "Found %d missing loot tables for %s.",
+    "commands.bookshelf.loot_tables.wildcard": "Found %d missing loot tables for all mods.",
+    "argument.bookshelf.unknown_value": "The value '%s' is unknown.",
+
+    "_comment": "Misc",
+    "text.bookshelf.ticks": "Ticks: %s"
+}
\ No newline at end of file
diff --git a/assets/bookshelf/lang/zh_tw.json b/assets/bookshelf/lang/zh_tw.json
new file mode 100644
index 000000000..8f3f16ae5
--- /dev/null
+++ b/assets/bookshelf/lang/zh_tw.json
@@ -0,0 +1,44 @@
+{
+    "_comment": "Traditional Chinese Language File",
+
+    "_comment": "Moon Phases",
+    "moon.phase.full": "滿月",
+    "moon.phase.waxing.gibbous": "盈凸月",
+    "moon.phase.first.quarter": "上弦月",
+    "moon.phase.waxing.crescent": "眉月",
+    "moon.phase.new": "新月",
+    "moon.phase.waning.crescent": "殘月",
+    "moon.phase.last.quarter": "下弦月",
+    "moon.phase.waning.gibbous": "虧凸月",
+
+    "_comment": "Months",
+    "time.bookshelf.month.january": "一月",
+    "time.bookshelf.month.february": "二月",
+    "time.bookshelf.month.march": "三月",
+    "time.bookshelf.month.april": "四月",
+    "time.bookshelf.month.may": "五月",
+    "time.bookshelf.month.june": "六月",
+    "time.bookshelf.month.july": "七月",
+    "time.bookshelf.month.august": "八月",
+    "time.bookshelf.month.september": "九月",
+    "time.bookshelf.month.october": "十月",
+    "time.bookshelf.month.november": "十一月",
+    "time.bookshelf.month.december": "十二月",
+
+    "_comment": "Days",
+    "time.bookshelf.day.sunday": "星期日",
+    "time.bookshelf.day.monday": "星期一",
+    "time.bookshelf.day.tuesday": "星期二",
+    "time.bookshelf.day.wednesday": "星期三",
+    "time.bookshelf.day.thursday": "星期四",
+    "time.bookshelf.day.friday": "星期五",
+    "time.bookshelf.day.saturday": "星期六",
+
+    "_comment": "Commands",
+    "commands.bookshelf.loot_tables": "找到 %d 個來自 %s 所缺少的戰利品表。",
+    "commands.bookshelf.loot_tables.wildcard": "找到 %d 個來自所有模組所缺少的戰利品表。",
+    "argument.bookshelf.unknown_value": "數值「%s」是未知的。",
+
+    "_comment": "Misc",
+    "text.bookshelf.ticks": "Ticks：%s"
+}
\ No newline at end of file