Need to copy column of cell values from one workbook to another with openpyxl

[curranjohn46]

I am extracting data from one workbook's column and need to copy the data to another existing workbook.

This is how I extract the data (works fine):

wb2 = load_workbook('C:\\folder\\AllSitesOpen2.xlsx')
ws2 = wb2['report1570826222449']
#Extract column A from Open Sites
DateColumnA = []
for row in ws2.iter_rows(min_row=16, max_row=None, min_col=1, max_col=1):
    for cell in row:
        DateColumnA.append(cell.value)
DateColumnA

The above code successfully outputs the cell values in each row of the first column to DateColumnA.

I'd like to paste the values stored in DateColumnA to this existing destination workbook:

#file to be pasted into
wb3 = load_workbook('C:\\folder\\output.xlsx')
ws3 = wb3['Sheet1']

But I am missing a piece conceptually here. I can't connect the dots. Can someone advise how I can get this data from my source workbook to the new destination workbook? Thanks!