In a series of rare postcards depicting ping pong, a German man living in Glasgow described the events at Ibrox in 1902 when a stand collapsed, causing the deaths of 25 people.
In the second postcard (address side shown), the sender tells "mummy" he hopes she likes the latest postcards before talking about attending the "big football match".
The third postcard describes how people at the front of the stand were crushed against railings and many fainted before the stand collapsed and "spectators fell through the construction".
The fourth postcard talks of the "terrible confusion" and the crowd surging forward onto the pitch "so that the game was almost totally disrupted". The sender adds that mounted police had to "keep order".
The fifth postcard describes how one man, who fell 50ft, watched the match to the end but "seemed afterwards to be very ill". The sender also said he would never go to a football match again.
The sixth postcard in the series has been added to the lot. It is believed there would have been a sixth card sent home by the German man but that this has since become lost.