In amongst my collection of chess magazines, I have a July 1995 copy of Blackmar-Diemer Gambit World. Just from the title you can correctly surmise that it is a specialist publication, dealing with the Blackmar-Diemer Gambit (although it does lead off with an odd joke about OJ Simpson!). It must have been a popular magazine, as the issue I have was numbered No. 69, although I have no idea if it is still in production.
It has the usual collection of brilliant wins for the BDG, and analysis of some of the more topical variations. I've grabbed a game from the issue to show, but rather than the usual BDG I've picked one that contains an idea that can be used as a weapon against the Caro-Kann.
1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Bc4 Nf6 5.f3 exf3 6.Nxf3 Bf5 7.0-0 Nbd7? (D)
8.Bxf7+ At least one game ended in resignation at this point 8. ... Kxf7 9.Ng5+ Kg6 [ 9...Kg8 10.Rxf5] 10.Rxf5! h6 [ 10...e6 11.Nxe6 Qe7 12.Qd3;
10...Kxf5 11.Qd3+ Ne4 12.Qxe4+ Kf6 13.Qe6#] 11.Qd3 hxg5 12.Rxf6+ Kxf6 13.Ne4+ Kg6 [ 13...Ke6 14.Qb3+ Kf5 15.Qf7+ Nf6 16.Ng3+ Kg4 17.Qe6+ Kh4 18.Qh3#] 14.Nd6+ Kh5 15.Qh3+ Kg6 16.Qf5+ 1-0