The Harold B. Lee Library has transcribed many of their historical documents and put them on the internet. This particular collection is a compendium of first person accounts of the voyage of the Ship Horizon, which carried most of the Martin Handcart Company. However I think the collection contains information on most of the Mormon voyages.
I think this is the most complete information with regards to this voyage. I pleasantly found stories I had never heard before. At on point while hoisting said on of the officer said "hoist higher." This was misinterpreted by one of the young guards to be "fire." He raised the alarm, but fortunately his mistake was quickly corrected.
On passenger was on deck with her father during a fog, when they saw an ice mountain. They were frightened, but then the sun began to shine brightly which it did until the ship was out of danger. John Jacques talks of how the company suffered when they were ordered below to give more reign to the seamen as the entered Boston Harbor.
An interesting story is told by John William Southwell, but not collaborated by any other entry. He described a wedding where the bride and groom were hoisted into the topmast and were there married. He says when they were lowered each of the couple were met by 100 people congratulating them.
I would recommend this series of diary entries and reminicences for anyone interested in studying the handcart pioneers.
One story, which is not corraborated by