To create my sample I first downloaded the RA and dec of the stars listed in Morrison+ (2016) as members of the cluster, there were 79. I then took those coordinates and cross matched them with stars listed in the 2MASS database; this provided me with 61 2MASS designations. From there I was able to query the Gaia DR2 archive to download the stars that had those 2MASS designations listed as their 'best neighbor,' this led to my final sample of 58 stars. Here are there positions and errors along with the mean(orange) and William Harris' (teal) centers.
Proper motions and errors of stars. Orange indiactes the mean. This, and following plots, ignore two stars with proper motions in declination of -1.82 and 0.440 mas/yr because they not fit with the bulk motion of the cluster.
This plot shows the reported parallaxes and their errors and compares them to the parallax that corresponds to the distance modulus, (m-M)=14.64 or d=8.472 kpc, given in Morrison+ (2016). The majority of the stars are reported to have smaller parallaxes - which means they are apparently further away - than they should. Given that this distance is far for Gaia, I would expect the parallaxes to not match what they should be.