I went to the library to find some research and got useful information overall. From the books they helped me to decide that the best approach in terms of design history for my project is to acknowledge design movements (eg. art nouveau, swiss design etc).
It also provided some cool imagery and ideas for concepts for making my posters this weekend which i’ve written down:
Train route – as timeline
Layers as historical styles
Old camera style but of modern
Newspaper article/cover discussing history – modern overlay
I also found the collective called Cyan. They make imagery inspired by 1920s graphic design and someone from this collective could be a great speaker for my conference.