Scans 46-65:

(scan 46) 7k Romanoff - cancellation of
Verkhnie-Akulisy, Erivan (a village in present-day Nakhichevan).
(scan 61) Two Soviet stamps with cancellations from
Travelling Post Offices (TPO's). Two numbers were assigned to each line, one for each direction of travel. The cancellations of the TPO's bear the names of the endpoints of the line and the appropriate number depending on the direction of the train. These cancellations were oval in Imperial times and mostly circular (with some oval survivals) in Soviet times. For a list of early Soviet period TPO's, see this article:
http://ufdc.ufl.edu/UF00020235/00045/82.
(scan 61) 20k Arms - railway station cancellation of
TSARTS.P.O / ORLOVSKO-GRYAZN-TSARITS.ZH.D. This is an early use of the scarce cancellation of the Tsaritsin railway station (Kiryushkin & Robinson show a first use in 1889). Here is the full postmark:

(scan 61) 70 cents/70k Offices in China - lower part of cancellation from
Chinese Eastern Railway. Unfortunately the station name does not show - only the inscription VOST.ZH.D.
(scan 62) 2k Romanoff - cancellation of
Kizlyar / Ter.Obl. (Terskaya oblast) in present-day Dagestan.
(scan 62) 1R Arms - cancellation of
Ochemchiri, Sukhumskiy Okrug, Black Sea (present-day Ochamchira in Abkhazia).
(scan 63) 20k Arms - cancellation of
Myszkow, Petrokovskaya guberniya, present-day Poland. Pre-adhesive postmark.
(scan 63) 2k Arms - cancellation of
Temir-Khan-Shura, present-day Buynaksk, Dagestan.
(scan 64) 5R Arms - cancellation of
Pishpek, Semirechenskaya oblast, Turkestan. Today: Bishkek, the capital of Kyrgyzstan.
(scan 65) 3k Arms - cancellation of
Lanchkhuti, Kutais guberniya, located in the western part of Georgia.