Search column H for non-blank cells and return the value in column A [closed]

I am trying to search the top chart, column H (H4:H24), for non-blank cells, and return the corresponding value in column A (A4:A24), in the bottom chart, column H3:H7. Basically I want to search column H (in the top chart) for filled in data and return the corresponding values in column A, to the bottom chart.

I have tried to use the following formula: =IF(NOT(ISBLANK('Plant Inventory!H4:H24')),"'Plant Inventory!'A:A","")

Plant inventory is the top chart. F1 - Flower Room 1, etc. There will be a separate sheet for each room, but if I can get the first formula (or two), I can do the remainder.

Thanks in advance!!!!

tom chart