Get paper, perhaps, from halt on eastern railway (10)
I believe the answer is:
stationery
'get paper perhaps' is the definition.
(paper is a type of stationery item)
'halt on eastern railway' is the wordplay.
'halt' becomes 'station' (halt is a type of railway station).
'on' says to put letters next to each other.
'eastern' becomes 'e'.
'railway' becomes 'ry' (abbreviation for railway).
'station'+'e'+'ry'='STATIONERY'
'from' is the link.
(Other definitions for stationery that I've seen before include "Treasury tags, for instance" , "Writer's needs" , "Files etc" , "Materials needed for writing" , "Writing material" .)