diff --git a/docs/1970s/1970/dos-11/dos-11.webp b/docs/1970s/1970/dos-11/dos-11.webp
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index 0000000..d293e16
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diff --git a/docs/1970s/1970/dos-11/index.md b/docs/1970s/1970/dos-11/index.md
new file mode 100644
index 0000000..8467a42
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+++ b/docs/1970s/1970/dos-11/index.md
@@ -0,0 +1,37 @@
+---
+keywords: ["DOS-11", "PDP-11", 1970s, 1970]
+image: ./dos-11.webp
+description: "! DOS-11 was an operating system for the DEC PDP-11 computer. We can run it on SIMH emulator."
+sidebar_position: 5
+---
+
+# ! DOS-11
+
+![! DOS-11](./dos-11.webp)
+
+! DOS-11 (**D**isk **O**perating **S**ystem - 11) was an operating system for the DEC PDP-11 computer. It has no relation with MS-DOS/PC-DOS other than the fact that all of them are ***disk*** operating systems. We can run DOS-11 on SIMH
+
+## Manuals
+
+You can download the ! DOS-11 Handbook from here (it is broken into several PDFs):
+
+- [! DOS-11 Handbook](http://www.bitsavers.org/pdf/dec/pdp11/dos-batch/V9/DosBatchHandbook_v9_Apr74/)
+
+There are many other additional DOS-11 manuals on bitsaver:
+
+- [Other DOS-11 Manuals](http://www.bitsavers.org/pdf/dec/pdp11/dos-batch/)
+
+You may also be interested in the PDP-11 manuals. It was the computer on which ! DOS-11 was supposed to run. You can download them from Bitsavers:
+
+- [PDP-11 Manuals](http://bitsavers.org/pdf/dec/pdp11/)
+
+## Related Pages
+
+- [! DOS-11 Wikipedia page](https://en.wikipedia.org/wiki/DEC_BATCH-11/DOS-11)
+- [PDP-11 Wikipedia page](https://en.wikipedia.org/wiki/PDP-11)
+- [Computer History Wiki ! DOS-11 page](https://gunkies.org/wiki/DOS-11)
+- [A third-party tutorial (on which our tutorial is based)](http://iamvirtual.ca/PDP-11/DOS-11/Install.htm)
+
+## Credits
+
+- The manuals were taken from [Bitsavers](http://bitsavers.org).
diff --git a/docs/1970s/1970/index.md b/docs/1970s/1970/index.md
index c322a01..70749c4 100644
--- a/docs/1970s/1970/index.md
+++ b/docs/1970s/1970/index.md
@@ -1,7 +1,7 @@
 ---
 keywords: [1970s, 1970]
 image: ./1970.webp
-description: "There were four operating system of our interest which were released in the year 1970. They were:"
+description: "There were five operating system of our interest which were released in the year 1970. They were:"
 sidebar_position: 2
 ---
 
@@ -11,6 +11,6 @@ import DocCardList from '@theme/DocCardList';
 
 ![! PDP7 Unix from 1970](./1970.webp)
 
-There were four operating system of our interest which were released in the year 1970. They were:
+There were five operating system of our interest which were released in the year 1970. They were:
 
 <DocCardList />
diff --git a/docs/start-here/dec/pdp11.md b/docs/start-here/dec/pdp11.md
index 22c8ab7..085bb67 100644
--- a/docs/start-here/dec/pdp11.md
+++ b/docs/start-here/dec/pdp11.md
@@ -10,3 +10,4 @@ sidebar_label: PDP-11
 These operating systems were made by [DEC](https://en.wikipedia.org/wiki/Digital_Equipment_Corporation) for their [PDP-11](https://en.wikipedia.org/wiki/PDP-11) computers.
 
 - [! CAPS-11](/1970s/1970/caps-11/)
+- [! DOS-11](/1970s/1970/dos-11/)
diff --git a/package-lock.json b/package-lock.json
index 75c4971..451b306 100644
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