Interior of house showing rising 1+0 seedlings in broadcast beds. Black spruce, 1+0, greenhouse.

First crops of spruce cuttings and special seed lots. Black spruce, 1+0, greenhouse.

First plastic greenhouse at the Irving nursery. Greenhouse, plastic.

Erosion in transplant lines due to soil texture and slope. Black spruce, 2+1, transplants.

11/2+11/2 transplants after their first growing season at the Irving nursery, n.b. the compact root system. White spruce, 2+1, transplants.

Carolina poplar cuttings in conventional beds. Carolina poplar, 1+0, cuttings.

Seedlings outside for hardening off prior to out-planting. Jack pine, 1+0, greenhouse, tubed seedlings.

General view of tubed seedling greenhouses with first crop of seedlings to right. Greenhouses.

Details of "portable" greenhouse showing construction of wood and polyfilm, "meccano" set bench frames and oil space heater. Greenhouses.

The first set up of "meccano" greenhouses set up to produce Ontario tubed seedlings. Greenhouses.