Where did Friedrich Schumann work?

Wustermark is quite close to Falkenhagen and has/used to have a large railway yard.

Via Railway Enthusiasts

There's a list of RAWs in 1932. For the area of Berlin, the following are noted:

• RAW Berlin
• RAW Berlin-Schöneweide
• RAW Grunewald
• RAW Potsdam
• RAW Tempelhof
• RAW Brandenburg-West

There is no RAW Wusterhausen denoted. However, the list of Bahnbetriebswerke 1939 has category Berlin 2:

The RAW Grunewald is very close to the Wustermark, as is the RAW Potsdam.

The byname of Schumann is Massenmörder vom Falkenhagener See, which is a location about halfway between BW Wustermark and Grunewald. It is also part of the Spandau district, where Schumann did live.

A part of the former Bw Wustermark, technically located between Wustermark and Dallgow-Döberitz, nowadays serves as a logistics area

Via Newspapers

In 1919, the Boulevard paper BZ did reports about the murders. In 2019, they did a column about their reporting then. It denotes that the circumstances of the arrest and that the case was held in the Landgericht Berlin III, but not his occupation. However, the original archive seems to be not offered by the newspaper. RElevant is, that the arrest was reported on the 21st of August.

However the Berliner Morgenpost of that day IS archived. Page 5 has a column titled "Der Massenmörder vom Falkenhagener See ist Gefasst" - the terror of Falkenhagen Lake is arrested. They declare..

Es handelt sich um den 27jährigen Gelegenheitsarbeiter Otto Schumann aus der Staalener Straße 6 in Spandau.

The MoPo of 1919 does mislabel the first name, and indicates he didn't have steady employment but would be employed wherever, however, and whenever he could. In contrast, the Morning issue of the Berliner Tageblatt und Handelszeitung identifies him on page 5 as "Schlosser Friedrich Schumann aus der Staalener Straße 6", but doesn't indicate the place of work.

The case started 5th of July 1920 and was reported about on page 5 of the Berliner Tageblatt und Handelszeitung. Again on the 7th (page 5, 8th (page 5, morning issue), 9th (page 6, morning issue), 10th (page 5, morning issue), 11th (page 5, morning issue), 13th (page 5, morning issue), and finally 14th (page 5, morning issue). Nowhere in the exhaustive reporting, his place of work is denoted.

Conclusion

Not just is the location, as Lloyd Crowther notes, possibly a misidentification, but also the classification of the location as a RAW is wrong: Wustermark was a service station of the Bahnbetriebswerk level. It is likely the place of work, if the Wuster- part is correct.

The book by Blazek is most probably in error on this detail.

The data given is highly improbable and implausible. That applies to the exact naming of the facility he worked for as well as the exact location and how he is said to have got there usually.

An alternative is presented below, arguing for a conflation between different railraod terminologies for the refitting station itself and as well for the name of the town that belonged to.

Schumann is recorded as having lived at Staakener Straße 6, in Spandau, right next to the train station there.

Wuster_hausen_ and Königs Wuster_hausen_ are indeed simply too far away.

His preferred escape back to nature and it's urges was the Falkensee in Falkenhagen and surrounding woods and forests.

The distance to travel on foot from Staakenstraße to lake Falkensee for his spare time fun is 5–9 kilometers. Well in range for pedestrian entertainment.

The distance to travel on foot from Staakener Straße in Spandau to Wuster_mark_ railway stationj is less than 15 kilometers.

Falkensee is to the northwest, Wustermark to the west of Spandau.

There was a Bahnbetriebswerk Wustermark Bw/Wur operating at the time.

The strange things here are the small inconsistencies we observe:

Obviously, the naming for the location of employment is confounded. There was no 'RAW' in Wustermark — and none in the respective Wusterhausens…

As a railway employee living right next to a station who worked at another railway station 15 kilometers away, it seems very strange for him to have walked the entire distance. He would have had very cheap access to tickets from his employer and the shortest travel path on foot is elongated by detours: the railway tracks make the trip much longer on foot than by train, as the train tracks almost follow a crow's flight while the pedestrian route has to follow some roads and avoid crossing/following the railroads.

It looks like one has to travel to Elstal railway logistics (today: one stop before coming from Berlin to station Wustermark, coordinates: 52°32'50.50"N 13° 0'1.40"E), to see where Schumann was working. If Schuman worked as a locksmith at some railroad refitting facility starting with 'Wuster-' then it was Wustermark. Most probably.