One bit of paranoia concerned the Syriac fragments of Eusebius, printed by Gerhard Beyer in 1926 in the German journal Oriens Christianus. I couldn’t find any information on when he died. In Europe, copyright extends until 70 years after the death of the author, you see. So I wrote to Hubert Kaufhold and Manfred Kropp, the current editors of Oriens Christianus, asking whether they knew when he died and if they claimed a copyright.
I had a very friendly email back from Dr Kropp yesterday, promising to look; and tonight Dr Kaufhold wrote as follows:
… Bei dem Autor des Oriens Christianus Dr. Gerhard Beyer handelte es sich um einen katholischen Priester, der 1931 gestorben ist (vgl. H. Kaufhold, Oriens Christianus. Gesamtregister für die Bände 1 (1901) bis 70 (1986), Wiesbaden 1989, S. 39, 146. Ein Urheberrecht besteht deshalb nicht mehr, so daß Sie seine Edition ohne weiteres verwenden können.
…Dr Gerhard Beyer was a Catholic priest, who died in 1931 (see H. Kaufhold, Oriens Christianus. Collected indexes for vols 1 (1901) to 70 (1986), Wiesbaden 1989, pp. 39, 146. No copyright exists any longer, so you can use his edition freely.
Full marks to the OC team to keep track of such things! Who would have guessed that an index with that sort of information in it existed?
I must remember to thank them in the book, and send them a copy of the electronic text when I have it.