To upload your maps to OldMapsOnline we need to receive an excel spreadsheet with basic information about each map.

Each spreadsheet must have the following columns:

id:               Your unique identifier
viewer:       URL to the zoomable viewer of the scan on the web
title:            Title of the map
date_from, date_to: Date of what is depicted on the map, not the publishing date;

• if you know the exact date, then in either YYYY, YYYY-MM or YYYY-MM-DD format
• if you know only the century, then as YYXX; eg. 16XX for 1600-1699

north:          Latitude of the north-most point
south:         Latitude of the south-most point
east:            Longitude of the east-most point
west:           Longitude of the west-most point
thumbnail:  URL to thumbnail

Link to sample metadata spreadsheet: https://www.oldmapsonline.org/blog/media/oldmapsonline.xls

Please use a validator to test your spreadsheet is correct.

Test here: https://www.oldmapsonline.org/add-maps/#tvalidator