Logo of <a href="https://en.wikipedia.org/wiki/Berkeley_Softworks" class="extiw" title="en:Berkeley Softworks">Berkeley Softworks</a>
Berkeley Softworks, Inc.
Own vectorization, based on <a rel="nofollow" class="external free" href="https://ia902805.us.archive.org/3/items/geoChart_1988-10_Berkeley_Softworks/geoChart_1988-10_Berkeley_Softworks.pdf">https://ia902805.us.archive.org/3/items/geoChart_1988-10_Berkeley_Softworks/geoChart_1988-10_Berkeley_Softworks.pdf</a>