There are 4 identical 1850 slave schedules except for the reference number, 39-42
David B Glenn, "United States Census (Slave Schedule), 1850 "
Slave's Name: Name: David B Glenn Event Type: Event Date: Event Place: Slave's Gender: Slave's Age: Slave's Race : Slave's Birth Year (Estimated): Reference ID: 41 Affiliate Publication Number: GS Film number: 442991 Digital Folder Number: 4192513 Image Number: 00422
"United States Census (Slave Schedule), 1850 ," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MVZM-3RR : accessed 27 Oct 2013), David B Glenn, 1850.
Were there 4 slaves, 4 locations of slaves or something else entirely?
"Glenn-460"