English to German of official documents

I need help translating some official documents (e.g. birth certificate, wedding certificate, letters of enrolment) from English into German. The German translations will be submitted to local authorities in Germany. Thus, they must be translated to ISO standard and certified as such. I am still collecting the documents for translation, but wish to identify, or even just short-list, translators now so as to be able to move quickly when my English documentation is prepared. Overall, I expect the job to involve no more than 10 pages of translation. I would hope for a turnaround time of about a week or less, with the job probably beginning in early January.