Below you can find logos, similar to the Purple Arch.

Maxi Marche Maxi Marche vector
SearchoPolis SearchoPolis vector
eResearchTechnology eResearchTechnology vector
March Madness Nutrition March Madness Nutrition vector
InvestorWeb Research InvestorWeb Research vector
Promomarche Promomarche vector
ExxonMobil Upstream Research ExxonMobil Upstream Research vector
Barchetta Barchetta vector
World Research Group 159 World Research Group 159 vector
Archstone-Smith Archstone-Smith vector
20 20 Foresight Executive Search 20 20 Foresight Executive Search vector
Bricomarche Bricomarche vector
State Street Research 68 State Street Research 68 vector
The Bon Marche The Bon Marche vector