Arch of Galerius

[Gwalchmai]

I have just come back from Salonica. Whilst there I had a good look at the Arch of Galerius.

Can anyone recommend a good book about the Arch?

Are there any reconstructions as some of the figures at the base of the Arch have become somewhat worn?

As this seems only part of the triumphal arch, are there any fragments left of the middle or southern part of the Arch?

Thanks.

John Doran