All of these resources include scholarly, vetted articles and reports. They will not include the "explicitly forbidden references" in your assignment.
If your scientist is in this database, the BIOGRAPHIES in this database would be the one Gale reference you are allowed. The BIOGRAPHIES articles may be supplemented with non-Gale journal articles, interviews, videos or websites, all of which are linked to other outside websites, and they can lead you to other resources.
As you can tell from the title, this database might be helpful with the contemporary culture and attitudes your scientist lived with. This is a database of Primary Source materials.
These databases might contain citations and/or journal articles by your scientist: