diff --git a/README.md b/README.md
index 16e022e..d7f0339 100644
--- a/README.md
+++ b/README.md
@@ -224,6 +224,14 @@ Blog posts, articles, tutorials, galleries, videos, et cetera.
 - [20+ Questions About My Plotter Painting Practice](https://www.eyesofpanda.com/project/plotter_painting_q_a/) – Q&A blog post with lots of details about more painterly plotting.
 - [How to Watercolor Paint with a Robotic Drawing Machine: An Interview with Licia He](https://www.dirtalleydesign.com/blogs/news/how-to-watercolor-painting-with-a-robotic-drawing-machine-an-interview-with-licia-he)
 - [300 Days with Plotters](https://liciahe.medium.com/300-days-with-plotters-14159ab64034) – Blog post by Licia He about a successful 100 day plotting challenge.
+- [Roland DXY 1300 Plotter Self Test](https://www.youtube.com/watch?v=BMVq8vuH4sw)
+- [Vintage Aritma 0507 Plotter drawing Sierpinski triangles in one stroke](https://www.youtube.com/watch?v=kfL3K8mQp5I) — Aritma Minigraf 0507 video
+- [Plotter (Artima Minigraf 0507)](https://www.youtube.com/watch?v=Xso0gfLp8IE&t=34s)
+- [https://jiristepanovsky.cz/project.php?p=13plotter](https://jiristepanovsky.cz/project.php?p=13plotter) — Blog post on the Aritma Minigraf 0507 plotter from Czechoslovakia.
+- [Another drawing on Aritma Minigraf 0507](https://www.youtube.com/watch?v=EwFyIusdH7g)
+- [Aritma Minigraf 0507 Plotting Space Shuttle](https://www.youtube.com/watch?v=YY0ivdyhLpo)
+- [Drawing an Etch-Mask Directly onto a PCB using a Vintage Plotter](https://www.youtube.com/watch?v=nkxiFXCnbj8&t=131s) — The video description has some interesting details about this plotter.
+- [OrCAD 386 and a plotter Colorgraf Aritma 512](http://simandl.cz/stranky/elektro/spoje/pcb.htm) — Article about using a Colorgraf 512 plotter with OrCAD 386 for making printed circuit boards.
 
 ## Manuals, Ephemera, Papers, and Patents
 
@@ -234,6 +242,7 @@ Scanned plotter manuals, marketing ephemera, academic papers, and patents. Thank
 Sorted alphabetically by company name and product name.
 
 - [Apple Color Plotter User's Manual](https://archive.org/details/AppleColorPlotter)
+- [Aritma Colorgraf 512](http://simandl.cz/stranky/elektro/colorgraf/colorgraf_a.htm) – Website with scanned schematics and manual.
 - [Atari 1020 Color Printer Owner's Guide (1982)](https://archive.org/details/atari-1020-color-printer) – A higher-quality scan is also available as [a PDF on buildlog.net](https://www.buildlog.net/blog/wp-content/uploads/2019/09/atari-1020-color-printer-owners-guide.pdf)
 - [Atari 1020 Color Printer Field Service Manual (1983)](https://archive.org/details/atari1020colorprinterfieldservicemanualrev.011983atari)
 - [CalComp Artisan Plus 1023/1025/1026 User's Guide (1990)](https://archive.org/details/calcomp-artisan-plus-1023-1025-1026-users-guide)