Wow, a really interesting album. At least sold complete, but don't aks for the price!
From the variety of types, I suspect that album originates from the Döberitz field - the first army test and training airbase outside of Berlin. The aerial view could help to confirm the location. But the pine tree surrounding almost begs for Brandenburg.
To the aircraft:
The group poses in front of a LVG B.I, as Joachim had mentioned already.
#5 shows the rare Kondor Taube Typ B - or the second Taube-type of the Kondor Flugzeugwerke from early 1913. Note the belly radiator. Two of those machines should have been built and I have noted - "a planned presentation in Döberitz has not taken place". Just I can't believe those are Gelsenkirchen-Rotthausen photographs and it seems to prove my sources wrong. The evaluation might just not have brought an order.
#7 crash of B.6/12 - the letter fits other 12-serials I have seen. And the shape of those triple rudders indicate an Albatros MZ.2 (not the Doppeltaube, of course...). The low number or time - early 1912 - would match the circumstances, as then several copies of that type were ordered. For a positive identification I would need the main landing gear.
But to me, only the forerunner MZ.1 with a modified tail, or a "LVG D 4" (spring/summer 1912) remain as possible candidates, though the LVG had rudders of broader chord usually.
#8 Taube "Leipzig IV" A.42/12 - is an Etrich-Rumpler Militärtaube, with 70hp Argus I assume.
#9 accident with DFW Mars Pfeil-Doppeldecker and Rumpler (70hp Mercedes). If B.30/xy belongs to a serial, then from 1913. And this would fit with the first batch of 6 machines ordered B.26-31/13.
#10 again a DFW Mars Pfeil-Doppeldecker with an interesting view of the outer wing supporting struts. I have the feeling this is another example photographers in those days cheated their audience. No idea about the No.36. Not a serial obviously and this type appeared in late 1912, so a 1912 serial is impossible.
#11 the not crashed aircraft here are a Harlan Typ 1912 and a forerunner of the Albatros DE or a late 3-strutter Doppeltaube - could have been the "Albatros Fledermaus" (this chapter I haven't concluded yet)
and finally another Taube, for which I need some more time to name...
A lot of unique pictures for sure!
Cheers
Aquilius