Great job Rob, you've managed to capture that Old School feel.
A recent commission - The Crimson Boar Inn - was a redraw of an existing old-school map for the Raleigh Tabletop RPG group Tales of the Crimson Boar | Obsidian Portal
(This is just one of the three levels at a reduced size)
This was a request made here at the guild: Map Request: Two-Story Structure and Cavern Complex
Done completely in Inkscape, all items from scratch.
The maps were provided at 90DPI and 300DPI for printing a 1 square per inch.
My tutorials: Using GIMP to Create an Artistic Regional Map ~ All My Tutorials
My GIMP Scripts: Rotating Brush ~ Gradient from Image ~ Mosaic Tile Helper ~ Random Density Map ~ Subterranean Map Prettier ~ Tapered Stroke Path ~ Random Rotate Floating Layer ~ Batch Image to Pattern ~ Better Seamless Tiles ~ Tile Shuffle ~ Scale Pattern ~ Grid of Guides ~ Fractalize path ~ Label Points
My Maps: Finished Maps ~ Challenge Entries ~ My Portfolio: www.cartocopia.com