I have tried the usual on-line passenger list resources, but drawn a blank.

Has anyone any idea where I could obtain the passenger list for the Cunard ship Carmania which travelling from Liverpool to Boston, arriving on December 7, 1924?

I am looking for confirmation of the arrival in Boston of an Elsie Killip aged about 6 - her parents Louis Killip and Florence Killip emigrated to the USA on this trip according to Florence's immigration papers, but there is no mention of her daughter who is meant to have emigrated with them.