Northern Gardener's Guide to Native Plants and PollinatorsLorraine Johnson, Sheila Colla, Douglas Tallamy, Anne Sanderson · First published 2023Open the Tome
Garden for the Rusty-Patched BumblebeeLorraine Johnson, Sheila Colla, Ann Sanderson · First published 2022Open the Tome
Bumble Bees of North AmericaPaul H. Williams, Robbin W. Thorp, Leif L. Richardson, Sheila R. Colla · First published 2014Open the Tome
