As you can read there, these maps come from "Heart, F., McKenzie, A., McQuillian, J., and Walden, D., ARPANET Completion Report". This text can be obtained from

As you can read there, these maps come from "Heart, F., McKenzie, A., McQuillian, J., and Walden, D., ARPANET Completion Report". This text can be obtained from http://walden-family.com/bbn/arpanet-completion-report.pdf http://walden-family.com/bbn/arpanet-completion-report.pdf EDIT: For a less deep link go to http://walden-family.com/bbn/ http://walden-family.com/bbn/