Added hyperlink

data/scotland_xyz.tsv

@@ -4,8 +4,6 @@ Ordnance Survey - Six Inch Scotland, 1843-1882 - 1:10,560	https://mapseries-tile
 War Office, Great Britain 1:25,000. GSGS 3906, 1940-43	https://mapseries-tilesets.s3.amazonaws.com/gsgs3906/{z}/{x}/{y}.png
 Roy - Roy Highlands, 1747-1752 - 1:36000	https://mapseries-tilesets.s3.amazonaws.com/roy/highlands/{z}/{x}/{y}.png
 Roy - Roy Lowlands, 1752-1755 - 1:36000	https://mapseries-tilesets.s3.amazonaws.com/roy/lowlands/{z}/{x}/{y}.png
-Great Britain - OS 1:25,000, 1937-61	https://nls-0.tileserver.com/fpsUZbIoj0Oa/{z}/{x}/{y}.jpg
-Great Britain - OS One Inch 7th series, 1955-61	https://nls-0.tileserver.com/fpsUZbc4ftb2/{z}/{x}/{y}.jpg
 Great Britain - OS 1:10,560, 1949-1970	https://mapseries-tilesets.s3.amazonaws.com/os/britain10knatgrid/{z}/{x}/{y}.png
 Great Britain - Bartholomew Half Inch, 1897-1907	https://mapseries-tilesets.s3.amazonaws.com/bartholomew_great_britain/{z}/{x}/{y}.png
 OS 25 inch, 1892-1914 - Scotland South 	https://mapseries-tilesets.s3.amazonaws.com/25_inch/scotland_1/{z}/{x}/{y}.png
@@ -50,4 +48,4 @@ OS 25 inch, 1892-1914 - Westmorland	https://mapseries-tilesets.s3.amazonaws.com/
 OS 25 inch, 1892-1914 - Wiltshire	https://mapseries-tilesets.s3.amazonaws.com/25_inch/wiltshire2nd/{z}/{x}/{y}.png
 OS 25 inch, 1892-1914 - Worcestershire	https://mapseries-tilesets.s3.amazonaws.com/25_inch/Worcestershire/{z}/{x}/{y}.png
 OS 25 inch, 1892-1914 - Yorkshire	https://mapseries-tilesets.s3.amazonaws.com/25_inch/yorkshire/{z}/{x}/{y}.png
-OS 25 inch, 1892-1914 'Holes' (fills gaps in series)	https://geo.nls.uk/mapdata3/os/25_inch_holes_england/{z}/{x}/{y}.png
+OS 25 inch, 1892-1914 'Holes' (fills gaps in series)	https://geo.nls.uk/mapdata3/os/25_inch_holes_england/{z}/{x}/{y}.png

pages/11_🧱_Ordnance_Survey.py

@@ -65,7 +65,7 @@ with st.expander("Acknowledgements"):
 - The Roy Maps are owned by the British Library.
 - The Great Britain – OS maps 1:25,000, 1937-61 and One Inch 7th series, 1955-61 are hosted by MapTiler.
 
-If you wish you use these layers within a website, or for a commercial or public purpose, please view the National Library of Scotland Historic Maps Subscription API or contact them at maps@nls.uk.
+If you wish you use these layers within a website, or for a commercial or public purpose, please view the [National Library of Scotland Historic Maps Subscription API](https://maps.nls.uk/projects/subscription-api/) or contact them at maps@nls.uk.
     """
     st.markdown(markdown, unsafe_allow_html=True)